{"id":"CVE-2026-52754","url":"https://www.cyber-defence.io/tools/cve/CVE-2026-52754","generatedAt":"2026-10-28T08:11:17.550Z","title":"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.","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.","published":"2026-06-10T14:16:36.000Z","lastModified":"2026-10-26T11:10:00.000Z","status":"Analyzed","sourceIdentifier":"disclosure@vulncheck.com","cvss":{"version":"4.0","score":8.7,"severity":"HIGH","vector":"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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/M"},"cwe":["CWE-347"],"affected":["nsa/ghidra"],"epss":{"score":0.00252,"percentile":0.16573,"date":"2026-10-27","history":[]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"high","text":"High impact if exploited, but EPSS currently rates exploitation as unlikely (0.25%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit."},"changes":[],"references":[{"url":"https://github.com/NationalSecurityAgency/ghidra/commit/78729379e471bbb3d969409be6a8c3d24af84220","tags":["Patch"],"source":"disclosure@vulncheck.com"},{"url":"https://github.com/NationalSecurityAgency/ghidra/commit/79d8f164f8bb8b15cfb60c5d4faeb8e1c25d15ca","tags":["Patch"],"source":"disclosure@vulncheck.com"},{"url":"https://github.com/NationalSecurityAgency/ghidra/security/advisories/GHSA-5wxq-7qpv-65p2","tags":["Vendor Advisory"],"source":"disclosure@vulncheck.com"},{"url":"https://www.vulncheck.com/advisories/ghidra-authentication-bypass-via-null-signature-in-pkiauthenticationmodule","tags":["Third Party Advisory"],"source":"disclosure@vulncheck.com"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-52754","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}