Cyber Resilience

CVE-2023-36786

Path Traversal in Microsoft Skype For Business Server 2015 … 2019

Published
10 October 2023
Modified
21 November 2024
Patch / advisory
CVSS Score v3.1 7.2
Click a component to see what it means
Raw vectorCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
EPSS Score 0.025 83th percentile
Risk Priority 57 floored blend · peak EPSS

Summary

CVE-2023-36786 is a high-severity Absolute Path Traversal (CWE-36) vulnerability in Microsoft Skype For Business Server. Its CVSS base score is 7.2 (High).

Operationally, exploitation aligns with the MITRE ATT&CK technique Exploit Public-Facing Application (T1190); ranked in the top 17% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog.

OWASP Top 10 for Web (2025)

EU & UK References

Vulnerability Data

Skype for Business Remote Code Execution Vulnerability

CWE(s)

Related Threats

MITRE ATT&CK Enterprise Techniques

T1190 Exploit Public-Facing Application Initial Access
Adversaries may attempt to exploit a weakness in an Internet-facing host or system to initially access a network.
Derived from this CVE’s CWE(s) via the direct CWE→ATT&CK cross-walk.

CVEs Like This One

CVE-2023-41763Same product: Microsoft Skype For Business Server
CVE-2023-36789Same product: Microsoft Skype For Business Server
CVE-2024-20695Same product: Microsoft Skype For Business Server
CVE-2024-21323Same vendor: Microsoft
CVE-2023-32054Same vendor: Microsoft
CVE-2023-36780Same product: Microsoft Skype For Business Server
CVE-2024-29053Same vendor: Microsoft
CVE-2026-32175Same vendor: Microsoft
CVE-2026-58300Same vendor: Microsoft
CVE-2023-3765Same vendor: Microsoft

Affected Assets

microsoft
skype for business server
2015, 2019

Mitigating Controls

Mitigating Controls (NIST CSF 2.0) AI

Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→CSF cross-walk (authority under review) — links open the control.

PR.PS-06 mostly match
prevents

Secure SDLC practices directly require input validation and path sanitization that prevent absolute path traversal.

Mitigating Controls (ISO/IEC 27001:2022 Annex A) AI

Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→ISO cross-walk (authority under review) — links open the control.

finds

Security testing in development can detect absolute path traversal via static analysis and fuzzing.

prevents

Secure development lifecycle includes input validation and path-handling requirements that reduce absolute path traversal risk.

prevents

Application security requirements typically mandate controls against path traversal in file-access functions.

prevents

Secure architecture principles call for canonicalization and sandboxing that limit absolute path traversal.

prevents

Secure coding standards directly require neutralization of absolute path sequences in pathname construction.

mitigates

Information access restriction limits which files can be reached but does not address the path-construction flaw itself.

References