Vulnerability · Published Jun 10, 2026 · Assigned by VulnCheck

CVE-2026-52754Ghidra < 12.1 - Authentication Bypass via Null Signature in PKIAuthenticationModule

High 8.8

In plain English

A high-severity security flaw in ghidra from nationalsecurityagency. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 17% of all known vulnerabilities).

Severity (CVSS 3.1)8.8High

Exploit odds (30 days)0.3%top 83.2% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official 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.

Affected products (as reported)

Vendor	Product	Versions
nationalsecurityagency	ghidra	0 – before 12.1

Weakness: CWE-347 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

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-pkiauthenticationmodule third-party-advisory