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

{
    "lastseen": "",
    "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": "2026-06-10T12:40:46.463Z",
    "modified": "2026-06-10T12:40:46.463Z",
    "type": "cve",
    "title": "Ghidra < 12.1 - Authentication Bypass via Null Signature in PKIAuthenticationModule",
    "source": "VulnCheck",
    "references": "https://github.com/NationalSecurityAgency/ghidra/security/advisories/GHSA-5wxq-7qpv-65p2\nhttps://github.com/NationalSecurityAgency/ghidra/commit/78729379e471bbb3d969409be6a8c3d24af84220\nhttps://github.com/NationalSecurityAgency/ghidra/commit/79d8f164f8bb8b15cfb60c5d4faeb8e1c25d15ca\nhttps://www.vulncheck.com/advisories/ghidra-authentication-bypass-via-null-signature-in-pkiauthenticationmodule",
    "id": "CVE-2026-52754",
    "bulletinFamily": "",
    "cwe": [
        "CWE-347"
    ],
    "cvelist": null,
    "sourceData": "nationalsecurityagency ghidra 0",
    "sourceHref": "",
    "cvss": {
        "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",
        "version": "4.0"
    },
    "cvss2": [],
    "cvss3": {
        "version": "",
        "vectorString": "",
        "baseScore": 0,
        "baseSeverity": "",
        "attackVector": "",
        "attackComplexity": "",
        "privilegesRequired": "",
        "userInteraction": "",
        "scope": "",
        "confidentialityImpact": "",
        "integrityImpact": "",
        "availabilityImpact": "",
        "cvssV3": {
            "version": "",
            "vectorString": "",
            "baseScore": 0,
            "baseSeverity": "",
            "attackVector": "",
            "attackComplexity": "",
            "privilegesRequired": "",
            "userInteraction": "",
            "scope": "",
            "confidentialityImpact": "",
            "integrityImpact": "",
            "availabilityImpact": ""
        }
    },
    "href": "",
    "category_name": "CVE",
    "post_link": "",
    "product": "ghidra",
    "version": "0",
    "vendor": "nationalsecurityagency",
    "ai_description": "Authentication bypass vulnerability in Ghidra's PKIAuthenticationModule via null signature, allowing attackers to impersonate users and escalate privileges.",
    "ai_severity": "High",
    "ai_vendor": "National Security Agency",
    "ai_product": "Ghidra",
    "ai_version": "< 12.1",
    "ai_score": 8.7
}