EUVD-2026-73154
GHSA-rm2q-7grv-v565
Severity by source
AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Network-delivered file parsed client-side; no attacker privileges needed; user must open the document; full host compromise on success.
Primary rating from Vendor (microsoft).
CVSS VectorVendor: microsoft
Lifecycle Timeline
3DescriptionCVE.org
Integer overflow or wraparound in Microsoft Office Publisher allows an unauthorized attacker to execute code over a network.
AnalysisAI
Remote code execution is possible in Microsoft Office Publisher across multiple Office suite versions when a victim opens a maliciously crafted Publisher document. The root cause is an integer overflow or wraparound (CWE-190) in the file-parsing subsystem, which typically produces an understated buffer allocation that an attacker can exploit to corrupt heap memory and redirect execution. …
Unlock full vulnerability intelligence
- Risk assessment & exploitation conditions
- Attack chain visualization
- Remediation with exact patch versions
- Threat intelligence from 22 sources
- Personal watchlist & email alerts
Free forever · No credit card required
Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires the victim to actively open or interact with a malicious Microsoft Publisher (.pub) document - user interaction is mandatory per the CVSS UI:R metric. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | CVSS 8.8 (AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H) accurately characterizes this as a high-severity, low-complexity vulnerability: the attacker needs no authentication, faces no special attack complexity, and can deliver a malicious file over any network vector - the only barrier is that the victim must actively open or preview the document. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | Full exploit scenario with step-by-step reproduction available after sign-in. |
| Remediation | Apply vendor-released patches immediately via Microsoft Update or the Microsoft 365 update channel: Publisher 2016 to build 16.0.5569.1000 or later, Office 2019 to 16.0.10417.20207 or later, Office LTSC 2021 to 16.0.14334.20906 or later, Office LTSC 2024 to 16.0.17932.20976 or later, and Microsoft 365 Apps for Enterprise to 16.0.20326.20138 or later. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours: identify all systems running Publisher 2016, Publisher 2019, or Microsoft 365 Apps for Enterprise and verify patch availability from Microsoft Security Updates. …
Sign in for detailed remediation steps and compensating controls.
Threat intelligence, references, and detailed analysis are available after sign-in.
Microsoft Outlook Remote Code Execution Vulnerability. Rated critical severity (CVSS 9.8), this vulnerability is remotel
Microsoft Excel Security Feature Bypass Vulnerability. Rated high severity (CVSS 7.8), this vulnerability is no authenti
Microsoft Publisher Security Feature Bypass Vulnerability. Rated high severity (CVSS 7.3), this vulnerability is low att
Microsoft Office contains a security feature bypass (CVE-2026-21509, CVSS 7.8) where reliance on untrusted inputs in sec
Microsoft Office Word contains a security decision bypass (CVE-2026-21514, CVSS 7.8) through reliance on untrusted input
Microsoft Office Access Connectivity Engine Remote Code Execution Vulnerability. Rated high severity (CVSS 7.8), this vu
Microsoft Office Remote Code Execution Vulnerability. Rated high severity (CVSS 7.8), this vulnerability is no authentic
Microsoft Excel Remote Code Execution Vulnerability. Rated high severity (CVSS 7.8), this vulnerability is no authentica
Use-after-free vulnerability in Microsoft Office Word that allows local, unauthenticated attackers to execute arbitrary
Microsoft Excel Remote Code Execution Vulnerability. Rated high severity (CVSS 8.8), this vulnerability is remotely expl
Microsoft Office Elevation of Privilege Vulnerability. Rated high severity (CVSS 7.8), this vulnerability is low attack
A remote code execution vulnerability exists in Microsoft Excel software when the software fails to properly handle obje
Same weakness CWE-190 – Integer Overflow or Wraparound
View allSame technique Buffer Overflow
View allShare
External POC / Exploit Code
Leaving vuln.today