Microsoft Sharepoint Enterprise Server 2016

Stored or reflected cross-site scripting in Microsoft SharePoint Server allows an authenticated low-privileged attacker to inject malicious script content that executes in a victim's browser, enabling spoofing attacks over a network. Affected deployments span SharePoint Enterprise Server 2016, SharePoint Server 2019, and SharePoint Server Subscription Edition. No public exploit code or active CISA KEV listing has been identified; the CVSS 4.6 Medium rating reflects the dual prerequisites of authentication and victim interaction, which materially constrain real-world exploitability.

Memory parsing across Microsoft Office and SharePoint Server products is susceptible to a CWE-125 out-of-bounds read that, when triggered by opening a specially crafted Office document, produces local information disclosure or application availability loss. The affected surface is broad - spanning Microsoft 365 Apps for Enterprise, Office 2016 through LTSC 2024 on both Windows and macOS, and SharePoint Enterprise Server 2016, 2019, and Subscription Edition - but real-world exploitation pressure is low: EPSS sits at 0.36% (28th percentile), CISA SSVC rates exploitation as none and the attack as non-automatable, and no public exploit has been identified at time of analysis. Vendor-released patches are available for all affected product lines.

Privilege elevation in Microsoft SharePoint Server (Enterprise Server 2016 and Server 2019) allows an authenticated network attacker to abuse an improper authorization check to gain higher privileges within the SharePoint environment. The flaw is tagged as an authentication bypass and carries a CVSS 8.8, reflecting high impact to confidentiality, integrity, and availability from a low-privileged starting point. Microsoft has released a patch; there is no public exploit identified at time of analysis and no CISA KEV listing.

Out-of-bounds read in Microsoft Office and SharePoint exposes process memory contents locally when a user opens a specially crafted document. Affected products span the full Office suite - Office 2016, 2019, LTSC 2021, LTSC 2024, Microsoft 365 Apps for Enterprise (Windows and Mac), and SharePoint Server 2016, 2019, and Subscription Edition - covering virtually the entire active Office install base. No public exploit code exists and CISA SSVC rates exploitation as none, making this a patch-and-monitor priority rather than an emergency response.

Spoofing vulnerability in Microsoft SharePoint Enterprise Server 2016, SharePoint Server 2019, and SharePoint Server Subscription Edition allows an authenticated network attacker to impersonate identities or forge content due to improper access control (CWE-284). Exploitation requires valid credentials (CVSS PR:L), limiting opportunistic attack surface. SSVC assessment confirms no active exploitation, and EPSS sits at just 0.28% (20th percentile), consistent with a targeted rather than broadly exploited vulnerability. Vendor-released patches are available for all three affected product lines.

Cross-site scripting in Microsoft SharePoint Enterprise Server 2016, Server 2019, and Server Subscription Edition enables authenticated network attackers to inject malicious scripts that execute in victims' browsers, enabling spoofing, session hijacking, or unauthorized actions on behalf of targeted users. The CWE-79 flaw requires victim interaction (UI:R) and low-privilege attacker credentials (PR:L), but the changed scope (S:C) means impact extends beyond the SharePoint server into the victim's browser session. No public exploit identified at time of analysis; EPSS of 0.28% (20th percentile) and SSVC exploitation rating of 'none' indicate low immediate threat despite broad enterprise deployment.

Privilege escalation in Microsoft SharePoint Server (Enterprise Server 2016, Server 2019, and Subscription Edition) lets an already-authenticated network user gain higher privileges by exploiting a missing authorization check (CWE-862). Any low-privileged account with access to the SharePoint web application can abuse the flaw to perform actions reserved for higher-privileged roles, with full confidentiality, integrity, and availability impact per the CVSS 8.8 rating. Microsoft has released a patch; there is no public exploit identified at time of analysis and it is not listed in CISA KEV.

Local code execution in Microsoft Word (Office 2016/2019, Microsoft 365 Apps, Office LTSC 2021/2024) arises from a heap-based buffer overflow triggered when a victim opens a maliciously crafted document. An attacker who convinces a user to open a booby-trapped file can run arbitrary code in that user's context, achieving full compromise of confidentiality, integrity, and availability on the host. No public exploit identified at time of analysis and the flaw is not listed in CISA KEV, though a vendor patch is available per Microsoft's MSRC advisory.

Local code execution in Microsoft Office Word (CWE-416 use-after-free) allows an unauthorized attacker to run arbitrary code in the context of the current user when a victim opens a maliciously crafted document. The flaw affects a broad Office footprint including Microsoft 365 Apps for Enterprise, Office 2019, Office LTSC 2021/2024 (Windows and Mac), and related SharePoint Server products that process Word documents. Microsoft has released a patch; no public exploit has been identified at time of analysis, and neither KEV nor EPSS/POC signals were provided in the input.

Numeric truncation error (CWE-197) in Microsoft Office Word triggers local information disclosure when a user opens a maliciously crafted document, exposing potentially sensitive memory contents with high confidentiality impact (C:H). The vulnerability spans a broad range of Microsoft Office and SharePoint products - including Microsoft 365 Apps for Enterprise, Office LTSC 2021/2024, Word 2016, Office 2019, Office 365 for Mac, and multiple SharePoint Server versions. No public exploit identified at time of analysis; CISA SSVC rates exploitation as none, EPSS stands at 0.39% (31st percentile), and a vendor-released patch is available from Microsoft.

Security feature bypass in Microsoft SharePoint (Enterprise Server 2016, Server 2019, and Server Subscription Edition) lets a network-based, unauthenticated attacker defeat a weak-authentication protection mechanism (CWE-1390) to gain high-impact access to confidentiality and integrity. Rated CVSS 9.1 with no attacker privileges or user interaction required, this is a serious pre-authentication issue in a widely deployed collaboration platform. Microsoft has published a fix, and there is no public exploit identified at time of analysis.

Local code execution in Microsoft Office Word (Microsoft 365 Apps, Office 2019/LTSC 2021/2024, Word 2016, and the macOS builds) arises from a stack-based buffer overflow triggered when a victim opens a maliciously crafted document. The CVSS 3.1 vector (AV:L/AC:L/PR:N/UI:R) shows an unauthenticated attacker needs no privileges but does require user interaction, and successful exploitation yields full confidentiality, integrity, and availability impact in the user's security context. There is no public exploit identified at time of analysis and it is not listed in CISA KEV, but Microsoft has released a patch.

Server-side request forgery in Microsoft SharePoint Server enables authenticated, low-privileged users to force the server to issue outbound network requests, exposing internal resources and sensitive data not directly accessible to the attacker. All three actively supported SharePoint server editions are affected: Enterprise Server 2016, Server 2019, and Subscription Edition. No public exploit code or CISA KEV listing exists at time of analysis; EPSS sits at 0.59% (44th percentile) and SSVC rates exploitation as none, indicating limited real-world exploitation activity despite the medium-high CVSS score.

Stored/reflected cross-site scripting in Microsoft SharePoint (Enterprise Server 2016, Server 2019, and Subscription Edition) lets an authenticated attacker inject script that executes in another user's browser session to spoof content over the network. Although Microsoft classifies the impact as 'spoofing,' the CVSS 3.1 vector rates confidentiality and integrity as High (C:H/I:H), indicating the injected script can access or alter sensitive session data. There is no public exploit identified at time of analysis, and a vendor patch is available.

Local code execution in Microsoft Word (part of Microsoft 365 Apps, Office 2019, Office LTSC 2021/2024, and Office for Mac) stems from a double free of heap memory (CWE-415) that lets an unauthorized attacker run arbitrary code when a victim opens a malicious document. The flaw was reported by Microsoft, carries CVSS 7.8, and a vendor patch is available; there is no public exploit identified at time of analysis and it is not listed in CISA KEV. Because exploitation requires the target to open a crafted file (UI:R), it is a user-interaction-gated client-side RCE rather than a remotely-triggerable service bug.

Arbitrary code execution in Microsoft Office Word (and the broader Office/365/SharePoint family) arises from a stack-based buffer overflow (CWE-121) that an attacker triggers when a victim opens a maliciously crafted document. The CVSS 3.1 vector (AV:L/UI:R) confirms this is a file-borne, local-context flaw requiring the user to open attacker-supplied content, yielding full confidentiality, integrity, and availability impact in the user's session. No public exploit identified at time of analysis, and it is not listed in CISA KEV; Microsoft has released a patch via MSRC.

Local code execution in Microsoft Office Word (via a stack-based buffer overflow, CWE-121) lets an attacker run arbitrary code in the context of the user who opens a maliciously crafted document. The flaw affects Microsoft 365 Apps for Enterprise, Office 2019, Office LTSC 2021/2024 (including Mac editions), and the Word component shared with SharePoint Server 2016/2019/Subscription Edition. No public exploit identified at time of analysis, and it is not listed in CISA KEV; exploitation requires the victim to open the attacker's file (UI:R).

Out-of-bounds read in Microsoft Office (including 365 Apps for Enterprise, Office 2016/2019, LTSC 2021/2024 on Windows and macOS, and SharePoint Server 2016/2019/Subscription Edition) allows a local attacker to disclose limited memory contents when a victim opens a specially crafted document. The CVSS 3.3 Low score, EPSS of 0.51% (40th percentile), SSVC exploitation status of 'none,' and absence from CISA KEV collectively place this vulnerability at low real-world priority despite its broad product footprint. No public exploit or proof-of-concept code has been identified at time of analysis.

Local code execution in Microsoft Word (and the wider Microsoft Office / Microsoft 365 Apps family) lets an unauthorized attacker run arbitrary code when a victim opens a maliciously crafted Word document that triggers a heap-based buffer overflow. All impacted SKUs - Microsoft 365 Apps for Enterprise, Office 2019, Office LTSC 2021/2024, the macOS Office builds, and SharePoint Server (which renders Office documents server-side) - are affected, and Microsoft has released a patch. There is no public exploit identified at time of analysis and the flaw is not listed in CISA KEV.

Information disclosure in Microsoft Office Word and related Microsoft 365/SharePoint products exposes sensitive memory contents when a user opens a specially crafted document. Affecting a broad suite of products spanning Word 2016 through Office LTSC 2024 and SharePoint Server versions, the flaw stems from improper input type validation (CWE-1287) in the document parsing subsystem. No public exploit has been identified at time of analysis; EPSS at 0.39% and CISA SSVC exploitation status of 'none' confirm this remains a theoretical rather than actively targeted risk, though Microsoft has released patches.

Local code execution in Microsoft Word (and Office/SharePoint components that render Word content) stems from an integer overflow in the file-parsing path, letting an attacker who convinces a victim to open a crafted document run arbitrary code with the victim's privileges. It affects a broad Office footprint including Microsoft 365 Apps, Office 2019, Office LTSC 2021/2024, the macOS editions, and SharePoint Server 2016/2019/Subscription Edition. There is no public exploit identified at time of analysis and it is not listed in CISA KEV, but the 7.8 CVSS and Word's ubiquity make it a routine priority patch.

Local code execution in Microsoft Office Word (across Microsoft 365 Apps, Office 2019/LTSC 2021/2024, Office for Mac, and Word 2016) allows an attacker to run arbitrary code by exploiting a use-after-free memory corruption flaw when a victim opens a maliciously crafted document. The CVSS 3.1 base score is 7.8 with a local attack vector requiring user interaction; there is no public exploit identified at time of analysis and the flaw is not listed in CISA KEV. Microsoft, which reported the issue itself, has released a patch.

Out-of-bounds read in Microsoft Office Word and associated Microsoft 365 products allows local information disclosure when a user opens a specially crafted document. Affecting a broad range of Microsoft Office versions across Windows and macOS - including Office 2019, LTSC 2021/2024, Microsoft 365 Apps for Enterprise, Office 365 for Mac, and SharePoint Server 2016/2019/Subscription Edition - an attacker with no prior system privileges must socially engineer a victim into opening a malicious file to trigger memory disclosure. No public exploit identified at time of analysis; EPSS is 0.39% (31st percentile) and SSVC confirms exploitation status as none and the attack as non-automatable.

Local code execution in Microsoft Office (2016, 2019, LTSC 2021/2024, 365 Apps, and the macOS builds) stems from an out-of-bounds read in a file-parsing routine that lets a crafted document corrupt memory and run attacker-controlled code in the context of the current user. The same document-parsing components also affect SharePoint Enterprise Server 2016, SharePoint Server 2019, and the Subscription Edition. Reported by Microsoft with a vendor patch available; no public exploit identified at time of analysis.

Out-of-bounds read in Microsoft Office exposes high-confidentiality memory contents to a local, unauthenticated attacker who can induce a user to open a crafted document. The flaw affects a wide swath of Office and SharePoint products across Windows and Mac platforms, including Microsoft 365 Apps for Enterprise, Office 2016 through LTSC 2024, Office 365 for Mac, and SharePoint Server 2016 through the Subscription Edition. No public exploit has been identified at time of analysis, EPSS is low at 0.50% (39th percentile), and CISA SSVC rates exploitation as none and the flaw as non-automatable, placing this firmly in a patch-and-monitor risk tier rather than an emergency-response tier.

Out-of-bounds memory read in Microsoft Office and SharePoint exposes sensitive in-process data when a user opens a specially crafted document on a local machine. Affecting Microsoft 365 Apps for Enterprise, Office 2016 through LTSC 2024 (Windows and macOS), and SharePoint Server 2016 through Subscription Edition, the CWE-125 flaw allows an unauthorized attacker to read beyond allocated buffer boundaries, achieving High confidentiality impact with no integrity or availability consequence. No public exploit exists and no active exploitation is confirmed at time of analysis - CISA SSVC rates exploitation status as none - making this a routine-priority patch despite the broad product coverage.

Out-of-bounds read in Microsoft Office and SharePoint Server exposes local memory contents to an unauthorized attacker, resulting in information disclosure. The vulnerability (CWE-125) is triggered when a user opens a specially crafted Office document, making exploitation dependent on user interaction rather than remote network access. No active exploitation has been confirmed - CISA KEV does not list this CVE, SSVC rates exploitation as none, and EPSS probability sits at 0.51% (40th percentile), collectively indicating low real-world threat activity despite the wide deployment footprint of affected products.

Cross-site scripting (CWE-79) in on-premises Microsoft SharePoint Server allows an authenticated, low-privileged attacker to inject script that executes in another user's browser session, enabling spoofing across a network. The scope-changed CVSS 3.1 rating of 8.7 (vector AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N) reflects the ability to break out of the vulnerable component's security context and impact victim data. Microsoft has released patches; there is no public exploit identified at time of analysis and CISA SSVC currently records exploitation as none.

Local information disclosure in Microsoft Office and SharePoint via an integer overflow (CWE-190) exposes sensitive data to low-privileged local attackers across a broad range of Office versions on both Windows and Mac platforms. The CVSS vector (AV:L/PR:L) confirms exploitation requires an existing foothold on the target machine, limiting real-world impact to post-compromise scenarios or insider threats. No active exploitation is confirmed by CISA KEV, and the EPSS score of 0.40% (32nd percentile) combined with SSVC exploitation status of 'none' indicates this is not currently being weaponized in the wild.

Local code execution in Microsoft Office (Microsoft 365 Apps, Office 2016/2019, LTSC 2021/2024, Office for Mac, and SharePoint Server) arises from a heap-based buffer overflow (CWE-122) that an unauthorized attacker triggers when a victim opens a maliciously crafted document. The CVSS 3.1 base score is 7.8 (AV:L/AC:L/PR:N/UI:R) with high confidentiality, integrity, and availability impact, meaning successful exploitation yields full code execution in the context of the current user. There is no public exploit identified at time of analysis and it is not listed in CISA KEV, but the ubiquity of Office makes it a high-priority patch target.

Cross-site scripting in Microsoft SharePoint Enterprise Server 2016, SharePoint Server 2019, and SharePoint Server Subscription Edition enables an authenticated network attacker to inject malicious scripts into SharePoint pages, causing spoofing against users who view the affected content. The vulnerability carries a CVSS 5.4 (Medium) score with an EPSS of 0.38% (30th percentile), indicating low current exploitation probability. No public exploit code has been identified and the vulnerability is absent from the CISA KEV catalog; a vendor-released patch is available via the Microsoft Security Response Center.

Out-of-bounds read (CWE-125) in Microsoft Office's file parsing logic exposes potentially sensitive in-memory data to a local attacker when a victim opens a specially crafted document, affecting Windows and macOS Office editions as well as Microsoft SharePoint Server. The CVSS 5.5 Medium score reflects a local-only attack vector with mandatory user interaction, confining impact to information disclosure with no integrity or availability consequence. No public exploit code exists, CISA SSVC classifies exploitation as 'none' with no automation potential, and the EPSS of 0.51% (40th percentile) confirms low current exploitation probability.

Spoofing via stored cross-site scripting in Microsoft SharePoint (Enterprise Server 2016, Server 2019, and Subscription Edition) allows an authenticated attacker to inject script that executes in another user's browser session across a network. CVSS is 8.7 with a scope change, reflecting that injected content escapes into the victim's authenticated context; there is no public exploit identified at time of analysis and CISA SSVC rates exploitation status as none. A vendor patch is available via Microsoft MSRC.

Cross-site scripting in Microsoft SharePoint Enterprise Server 2016, SharePoint Server 2019, and SharePoint Server Subscription Edition enables an authenticated attacker with low-privilege network access to inject malicious scripts into SharePoint pages, resulting in spoofing impacts when a victim user interacts with the crafted content. The CVSS vector (PR:L/UI:R) confirms exploitation requires both an existing authenticated account and victim interaction, constraining real-world risk relative to unauthenticated XSS variants. No public exploit identified at time of analysis and the vulnerability is not listed in the CISA KEV catalog. Vendor patch is available via the Microsoft Security Response Center.

Cross-site scripting in Microsoft SharePoint (Enterprise Server 2016, Server 2019, and Subscription Edition) allows an authenticated attacker with low-privilege access to inject malicious JavaScript into SharePoint-rendered pages, which then executes in the browsers of other users who view the content, enabling spoofing and session-context abuse. The CVSS PR:L requirement confirms unauthenticated exploitation is not possible, and the UI:R requirement means the attack depends on victim interaction. No public exploit code has been identified, SSVC rates exploitation as none with partial technical impact, and the EPSS score of 0.38% (30th percentile) indicates low near-term exploitation probability.

Cross-site scripting in Microsoft SharePoint Enterprise Server 2016, Server 2019, and Server Subscription Edition enables an authenticated attacker to inject malicious scripts into SharePoint-generated web pages viewed by other users, producing a spoofing effect. The scope-changed CVSS vector (S:C) confirms that impact escapes the server component and reaches victim browsers. No active exploitation is confirmed - EPSS sits at 0.28% (20th percentile) and CISA has not added this to KEV - placing real-world urgency below the raw CVSS 5.4 might suggest.

Remote code execution in Microsoft SharePoint (Enterprise Server 2016, Server 2019, and Server Subscription Edition) allows an unauthenticated network attacker to run arbitrary code on the server by submitting maliciously crafted serialized data (CWE-502). The CVSS 3.1 base score is 9.8 with a fully remote, no-interaction, no-privilege vector (AV:N/AC:L/PR:N/UI:N), placing it among the most severe SharePoint flaws. There is no public exploit identified at time of analysis and it is not listed in CISA KEV, but insecure-deserialization RCE in SharePoint has historically been a high-value target for rapid weaponization.

Remote code execution in Microsoft SharePoint Server (2016, 2019, and Subscription Edition) lets an unauthenticated attacker run arbitrary code by sending a crafted serialized payload over the network. The flaw is an untrusted-data deserialization (CWE-502) rated CVSS 9.8 with PR:N/UI:N, meaning no credentials or user interaction are required. No public exploit identified at time of analysis, but the pre-auth network vector and SharePoint's long history as an attacker target make this a high-priority patch.

Privilege elevation in Microsoft SharePoint Server (Enterprise Server 2016, Server 2019, and Subscription Edition) lets an unauthenticated network attacker reach a security-critical function that lacks any authentication check (CWE-306), gaining elevated privileges on the target farm. The flaw is confirmed actively exploited (CISA KEV) with publicly available exploit code, and its CVSS 3.1 base score of 9.8 (AV:N/AC:L/PR:N/UI:N) reflects fully remote, unauthenticated exploitation with high confidentiality, integrity, and availability impact. Microsoft has released a patch via MSRC.

External file path control in Microsoft SharePoint Enterprise Server 2016, Server 2019, and Server Subscription Edition allows authenticated low-privileged network attackers to perform spoofing, resulting in high confidentiality impact (C:H per CVSS). Exploitation requires no special configuration or user interaction, only a valid SharePoint account. No active exploitation is confirmed - SSVC rates exploitation as none, EPSS sits at 0.71% (49th percentile), and this CVE does not appear in CISA KEV - placing this as a medium-priority patching item despite its network-reachable, low-complexity attack profile.

Remote code execution in Microsoft SharePoint Server (2016 Enterprise, 2019, and Subscription Edition) allows an authenticated attacker to execute arbitrary code on the server by submitting crafted serialized data that triggers unsafe deserialization. The CVSS 8.0 vector requires low privileges and user interaction, and no public exploit is identified at time of analysis. The flaw is significant because SharePoint servers typically run with high privileges inside enterprise environments and frequently host sensitive collaboration data.

Authenticated remote code execution in Microsoft SharePoint (Enterprise Server 2016, Server 2019, and Subscription Edition) stems from unsafe deserialization of untrusted data (CWE-502), enabling an authorized attacker to run arbitrary code on the server over the network. CVSS 8.8 with low privileges required and no user interaction makes this attractive to post-authentication adversaries, though no public exploit identified at time of analysis and CVSS temporal data marks exploit code maturity as Unproven.

Local code execution in Microsoft Word (and Office 2016/2019, LTSC 2021/2024, 365 Apps, Office for Mac, and SharePoint Server) stems from an untrusted pointer dereference (CWE-822) that lets an attacker run arbitrary code with the victim's privileges when a malicious file is processed. Microsoft rates it CVSS 8.4 with total technical impact (high confidentiality, integrity, and availability loss). There is no public exploit identified at time of analysis, EPSS is very low (0.04%), and CISA SSVC marks exploitation as none and not automatable, indicating no observed real-world attacks yet.

Remote code execution in Microsoft SharePoint Server (2016, 2019, and Subscription Edition) allows an authenticated attacker with low-privilege access to execute arbitrary code across the network by abusing insufficiently granular access controls (CWE-1220). The flaw carries a CVSS 8.8 rating with full confidentiality, integrity, and availability impact; however EPSS estimates only a 0.06% exploitation probability and CISA SSVC records no observed exploitation, so this is currently no public exploit identified at time of analysis. Microsoft has released patches for all affected editions.

Remote code execution in Microsoft SharePoint (Enterprise Server 2016, Server 2019, and Subscription Edition) allows an authenticated attacker to run arbitrary code on the server by submitting maliciously crafted serialized data (CWE-502). An authorized user holding only low-level site privileges can escalate to full server compromise over the network with no user interaction. No public exploit identified at time of analysis, and CISA SSVC records exploitation status as 'none'; EPSS sits at 0.50% (66th percentile), indicating modest near-term exploitation probability despite the high CVSS 8.8 score.

Remote code execution in Microsoft SharePoint Server (Enterprise Server 2016, Server 2019, and Subscription Edition) allows an authenticated attacker (PR:L) to run arbitrary code over the network by submitting maliciously crafted serialized data that the server deserializes without validation. Microsoft has released a patch and no public exploit identified at time of analysis; EPSS is modest at 0.50% (66th percentile) and CISA SSVC rates exploitation as 'none' but technical impact as 'total'. The bug follows the well-known SharePoint deserialization RCE pattern (CWE-502), making it a high-value target for post-authentication lateral movement and full server compromise.

Remote code execution in Microsoft SharePoint Server (2016, 2019, and Subscription Edition) allows an authenticated attacker to run arbitrary code across the network by submitting maliciously crafted serialized data (CWE-502). Any user holding low-privilege authenticated access to the SharePoint web application can achieve total compromise of the server (C:H/I:H/A:H). There is no public exploit identified at time of analysis, and the EPSS probability is modest at 0.50% (66th percentile), but the impact is total and a vendor patch is already available.

Remote code execution in Microsoft SharePoint Server (2016, 2019, and Subscription Edition) allows an authenticated attacker with low-level site privileges to run arbitrary code across the network by submitting maliciously crafted serialized data (CWE-502). Microsoft has released a patch; there is no public exploit identified at time of analysis, and the EPSS score is low (0.31%, 55th percentile), with CISA's SSVC framework rating exploitation status as 'none' but technical impact as 'total'. The combination of authenticated-but-low privilege access and full compromise of confidentiality, integrity, and availability makes this a meaningful escalation-to-RCE risk in enterprise collaboration environments.

Remote code execution in Microsoft SharePoint (Enterprise Server 2016, Server 2019, and Server Subscription Edition) allows an authenticated attacker to run arbitrary code over the network by supplying maliciously crafted serialized data (CWE-502). Any user holding valid low-privilege credentials on the SharePoint farm can achieve total compromise of confidentiality, integrity, and availability. There is no public exploit identified at time of analysis, and CISA SSVC records exploitation status as none; EPSS is a modest 0.50% (66th percentile).