CVE-2026-52754

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.

CVSS 4.0

8.7CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

CVSS 3.1

8.8CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

EPSS

0.3% chance of exploitation in the next 30 days; higher than 16% of CVEs (scores of 2026-10-25)

CWE

CWE-347

Published

2026-06-10

Modified

2026-10-26

Record from

the NVD, synced 2026-10-26

Affected

• nsa:ghidra

References

• https://github.com/NationalSecurityAgency/ghidra/commit/78729379e471bbb3d969409be6a8c3d24af84220
• https://github.com/NationalSecurityAgency/ghidra/commit/79d8f164f8bb8b15cfb60c5d4faeb8e1c25d15ca
• https://github.com/NationalSecurityAgency/ghidra/security/advisories/GHSA-5wxq-7qpv-65p2
• https://www.vulncheck.com/advisories/ghidra-authentication-bypass-via-null-signature-in-pkiauthenticationmodule

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