Quick answers
- Is CVE-2026-52754 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-52754 being exploited in the wild.
- How severe is CVE-2026-52754?
- High severity, with a CVSS score of 8.8, published 10 June 2026.
- Which products and versions are affected?
- National Security Agency Ghidra Server < 12.1.
- Is there a fix for CVE-2026-52754?
- No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
- How is CVE-2026-52754 attacked?
- It is attacked over the network, in a hosted service.
- Am I affected by CVE-2026-52754?
- Check whether you run National Security Agency Ghidra Server at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.
Technical details
An authentication bypass vulnerability exists in GhidraServer's PKIAuthenticationModule.authenticate() due to improper verification of cryptographic signatures (CWE-347). When the server is configured in PKI mode (-a2), it uses a challenge-response protocol where the client is expected to sign a random token. However, the server-side logic skips the signature verification block entirely if the signature bytes provided by the client are null, rather than rejecting the request. An attacker with a valid CA-signed certificate can present any other user's public certificate and a null signature to successfully authenticate as that user. This allows for privilege escalation to administrator status and full access to shared repositories. The issue is fixed in Ghidra version 12.1.
Affected products
- National Security Agency (NSA) Ghidra Server < 12.1
Timeline
- 2019-03-26: other: Vulnerability introduced in initial open-source release
- 2026-05-14: advisory: GitHub Security Advisory GHSA-5wxq-7qpv-65p2 published
- 2026-06-10: disclosed: CVE-2026-52754 published to NVD
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