What is the CVSS score of CVE-2023-36780?

CVE-2023-36780 has a CVSS 3.1 base score of 7.2 (High). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H. EPSS exploitation probability: 2.6%.

Is there a patch available for CVE-2023-36780?

Yes, a patch is available for CVE-2023-36780. Update the affected software to the latest version immediately.

Skype For Business Server CVE-2023-36780

HIGH

Untrusted Search Path (CWE-426)

2023-10-10 secure@microsoft.com

RCE Microsoft Skype For Business Server

7.2

CVSS 3.1 · Vendor: microsoft

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Vulnerability Assessment

Weakness	CWE CWE-426 OWASP Top 10:2025 A08:2025 - Software or Data Integrity Failures ASVS 5.0 V13 - Configuration Search path verification
Impact	CVSS score of 7.2 (HIGH). Attack characteristics: network attack vector, low complexity, high privileges required, no user interaction not required.
Exploit ScenarioDerived	This vulnerability can be exploited remotely over the network. Successful exploitation could compromise the high-severity affected system.

This Week Schedule remediation this week. Why: HIGH severity (CVSS 7.0-8.9).

Patch available 2.6% exploitation probability (EPSS)

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AnalysisAI

Skype for Business Remote Code Execution Vulnerability. Rated high severity (CVSS 7.2), this vulnerability is remotely exploitable, low attack complexity.

RemediationAI

A vendor patch is available. Apply the latest security update as soon as possible. Apply vendor patches when available. Implement network segmentation and monitoring as interim mitigations.

Affects your stack

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Technical ContextAI · show details

This vulnerability is classified under CWE-426. Affected products include: Microsoft Skype For Business Server.

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Exploit and PoC references, threat intelligence from 22 sources

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Severity by source

Vendor (microsoft) PRIMARY 7.2 HIGH

AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

Primary rating from Vendor (microsoft) · only source for this CVE.

CVSS VectorVendor: microsoft

Attack Vector

Network

Attack Complexity

Low

Privileges Required

High

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

DescriptionCVE.org

Skype for Business Remote Code Execution Vulnerability

Threat Intelligence Overview

EPSS Score

2.6%

Top 17% exploitable

Data Quality

2 sources

Confidence: Low

NVD

CVE.org

EPSS

How this decision was reached

The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.

SignalValue

Severity HIGH

CISA KEV No

Public POC No

EPSS 2.6%

Patch available Yes

Active threat No

Deciding rule

HIGH severity (CVSS 7.0-8.9)

What every action level means

Emergency Immediate action required. Criteria: CRITICAL + in CISA KEV (actively exploited) without patch, OR CRITICAL + EPSS > 30% without patch, OR CRITICAL + active threat signals without patch.

Act Now Prioritize within 24-48h. Criteria: in KEV with patch available, OR CRITICAL + public POC, OR HIGH + EPSS > 10%, OR CRITICAL + active threat, OR any CRITICAL severity.

This Week Schedule remediation this week. Criteria: HIGH severity (CVSS 7.0-8.9). Patch within normal change window.

This Month Plan within 30 days. Criteria: MEDIUM severity (CVSS 4.0-6.9), lower exploitation probability. Include in regular patch cycle.

Monitor Track and reassess. Criteria: LOW severity (CVSS 0.1-3.9), minimal exploitation risk. No immediate action needed.

SSVC AssessmentENISA

SSVC Decision· derived

Scheduled

Exploitation· derived

None

System Exposure· derived

Open

Automatable· derived

Human Impact· derived

Medium

Priority Score

Low Medium High Critical

KEV: 0

EPSS: +3

CVSS: +36

PoC: 0

Weaponized: 0

Threat intel: 0

Gov advisory: 0

Attack Technique

Remote Code Execution CRITICAL

Remote Code Execution represents the critical moment when an attacker successfully runs arbitrary code on a target system without physical access.

Affected Products (CPE)CVE.org

cpe:2.3:a:microsoft:skype_for_business_server:2015:cumulative_update_13:*:*:*:*:*:*

cpe:2.3:a:microsoft:skype_for_business_server:2019:cumulative_update_7:*:*:*:*:*:*

More in Skype For Business Server

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CVE-2026-66302 CRITICAL Act Now

9.8 Sep 08

Remote code execution in Microsoft Skype for Business Server (2015 CU13, 2019 CU8, and Subscription Edition CU1) lets an

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5.3 Oct 10

Skype for Business Elevation of Privilege Vulnerability. Rated medium severity (CVSS 5.3), this vulnerability is remotel

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Skype for Business Server's failure to properly verify cryptographic signatures (CWE-347) enables unauthenticated attack

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7.5 Sep 08

Server-side request forgery in Microsoft Skype for Business Server exposes internal network resources to unauthenticated

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Unauthenticated network denial-of-service in Microsoft Skype for Business Server allows a remote attacker to crash the s

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Skype for Business and Lync Remote Code Execution Vulnerability. Rated high severity (CVSS 7.2), this vulnerability is r

CVE-2026-66305 HIGH This Week

7.1 Sep 08

Client-side authentication bypass in Microsoft Skype for Business Server enables a low-privileged network attacker to pe

CVE-2015-2531 MEDIUM This Month

4.3 Sep 09

Cross-site scripting (XSS) vulnerability in the jQuery engine in Microsoft Lync Server 2013 and Skype for Business Serve

CVE-2026-66303 MEDIUM This Month

6.5 Sep 08

Null pointer dereference in Microsoft Skype for Business Server allows any authenticated low-privilege user to crash the

CVE-2026-66308 MEDIUM This Month

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Out-of-bounds read in Skype for Business Server enables authenticated network attackers to crash the service, causing a

Same weakness CWE-426 – Untrusted Search Path

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CVE-2015-0096 CRITICAL POC

9.3

CVE-2012-1854 HIGH POC

7.8

CVE-2016-5330 HIGH POC

7.8

CVE-2019-11660 HIGH POC

7.8

CVE-2017-12414 CRITICAL POC

9.8

CVE-2025-26155 CRITICAL POC

9.8

CVE-2023-30330 CRITICAL POC

9.8

CVE-2023-26036 CRITICAL POC

9.8

Same technique RCE

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CVE-2021-44228 CRITICAL POC

10.0

CVE-2017-7269 CRITICAL POC

9.8

CVE-2022-47966 CRITICAL POC

9.8

CVE-2012-4681 CRITICAL POC

9.8

CVE-2023-3519 CRITICAL POC

9.8

CVE-2015-5119 CRITICAL POC

9.8

CVE-2016-4117 CRITICAL POC

9.8

CVE-2015-3113 CRITICAL POC

9.8

References

Advisories & patches

PATCH https://msrc.microsoft.com/update-guide/vulnerability/CVE-2023-36780

Search Externally

GitHub PoC

Exploit-DB PacketStorm Snyk Rapid7 Nuclei Templates Trickest PoC

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