CVE-2026-52754

Ghidra < 12.1 - Authentication Bypass via Null Signature in PKIAuthenticationModule

State: Published
Severity: 8.7 High
Published: Jun 10, 2026
Updated: Jul 14, 2026
Reserved: Jun 8, 2026

Description

Ghidra before 12.1 contains an authentication bypass vulnerability in PKIAuthenticationModule.authenticate() that allows any user with a valid CA-signed certificate to impersonate other users by presenting their public certificate with a null signature. Attackers can escalate privileges, modify repository access controls, exfiltrate shared reverse engineering databases, and permanently compromise server integrity.

Scores

CVSS	Score	Vector	Source
4.0	8.7 High	CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N	VulnCheck
3.1	8.8 High	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H	VulnCheck

Weaknesses

CWE-347 Improper Verification of Cryptographic Signature

Affected Products

Product	Versions
ghidranationalsecurityagency	before 12.1Affected 12.1Not affected

References

GitHub Security Advisory (GHSA-5wxq-7qpv-65p2)vendor-advisory
Patch Commit (1)patch
Patch Commit (2)patch
https://www.vulncheck.com/advisories/ghidra-authentication-bypass-via-null-signature-in-pkiauthenticationmodulethird-party-advisory

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