On F5 BIG-IP versions 13.0.0 - 13.1.0.3, attackers may be able to disrupt services on the BIG-IP system with maliciously crafted client cert

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

• f5 big-ip access policy manager13.0.0 and later · before 13.1.0.4
• f5 big-ip advanced firewall manager13.0.0 and later · before 13.1.0.4
• f5 big-ip analytics13.0.0 and later · before 13.1.0.4
• f5 big-ip application acceleration manager13.0.0 and later · before 13.1.0.4
• f5 big-ip application security manager13.0.0 and later · before 13.1.0.4
• f5 big-ip domain name system13.0.0 and later · up to 13.1.0.4 inclusive
• f5 big-ip edge gateway13.0.0 and later · before 13.1.0.4
• f5 big-ip global traffic manager13.0.0 and later · before 13.1.0.4
• f5 big-ip link controller13.0.0 and later · before 13.1.0.4
• f5 big-ip local traffic manager13.0.0 and later · before 13.1.0.4
• f5 big-ip policy enforcement manager13.0.0 and later · before 13.1.0.4
• f5 big-ip webaccelerator13.0.0 and later · before 13.1.0.4
• f5 big-ip websafe1.0.0

Versions reported by the vendor

Affected version ranges reported by the assigning authority (f5). Independent of NVD's CPE analysis and usually ahead of it.

• F5 Networks, Inc. BIG-IP (LTM, AAM, AFM, Analytics, APM, ASM, DNS, Edge Gateway, GTM, Link Controller, PEM, WebAccelerator, WebSafe)

  • 13.0.0 - 13.1.0.3affected

Other highest-scoring records for the same primary product.

• CVE-2022-1388On F5 BIG-IP 16.1.x versions prior to 16.1.2.2, 15.1.x versions prior to 15.1.5.1, 14.1.x versions prior to 14.1.4.6, 13.1.x versions prior KEV
  99Now
• CVE-2021-22986On BIG-IP versions 16.0.x before 16.0.1.1, 15.1.x before 15.1.2.1, 14.1.x before 14.1.4, 13.1.x before 13.1.3.6, and 12.1.x before 12.1.5.3 KEV
  99Now
• CVE-2020-5902In BIG-IP versions 15.0.0-15.1.0.3, 14.1.0-14.1.2.5, 13.1.0-13.1.3.3, 12.1.0-12.1.5.1, and 11.6.1-11.6.5.1, the Traffic Management User InteKEV
  99Now
• CVE-2023-46747BIG-IP Configuration utility unauthenticated remote code execution vulnerabilityKEV
  98Now
• CVE-2021-22991On BIG-IP versions 16.0.x before 16.0.1.1, 15.1.x before 15.1.2.1, 14.1.x before 14.1.4, 13.1.x before 13.1.3.6, and 12.1.x before 12.1.5.3,KEV
  87Now
• CVE-2026-94127BIG-IP APM OAuth vulnerabilityKEV
  68This week

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

Root cause

A certificate validation error is silently swallowed instead of terminating the connection. Often, code added for a test environment makes its way into production.

A representative example of this vulnerability class. Not the vendor's source code; it shows the faulty pattern and its fix.

1override fun checkServerTrusted(chain: Array<X509Certificate>, type: String) {2  // Left empty for the test environment3}

1val client = OkHttpClient.Builder()2  .certificatePinner(3    CertificatePinner.Builder()4      .add("api.sirius.example", "sha256/…")5      .build()6  ).build()

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.