CVE-2026-52754Network attack vector

Account impersonation via skipped null-signature verification

Published Jun 10, 2026 · Updated Jun 10, 2026

Authentication bypass in National Security Agency Ghidra Server before 12.1 allows remote authenticated users to impersonate server accounts. PKIAuthenticationModule.authenticate() treats null signature bytes as a reason to skip challenge verification, then maps the supplied certificate's DN to a username. Reachability requires PKI mode -a2, a valid CA-issued certificate, and the target's public certificate; impersonation grants the target's repository permissions.

CVSS severity8.7
High
EPSS probability0.25%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Authentication bypass in National Security Agency Ghidra Server before 12.1 allows remote authenticated users to impersonate server accounts. PKIAuthenticationModule.authenticate() treats null signature bytes as a reason to skip challenge verification, then maps the supplied certificate's DN to a username. Reachability requires PKI mode -a2, a valid CA-issued certificate, and the target's public certificate; impersonation grants the target's repository permissions.

The record

CVE
CVE-2026-52754
Published
Jun 10, 2026
Updated
Jun 10, 2026
Vendor
National Security Agency
Product
Ghidra
Classifications
CWE-347, T1078
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Jun 10, 2026CVE publishedPublication date reported by the CVE source.
  2. Jun 10, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <12.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

National Security Agency · Ghidraversion=0 <12.1

Published CVSS scores

8.7VulnCheckCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
8.8VulnCheckCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-347Improper Verification of Cryptographic Signature
T1078Valid Accounts

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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