CVE-2026-40423

CVE-2026-40423 affects BIG-IP SIP profile on a virtual server. Undisclosed traffic can cause the Traffic Management Microkernel (TMM) to terminate, disrupting traffic and allowing a remote, unauthenticated attacker to trigger a DoS. Impact is shown as HIGH (CVSS v3.1: 7.5) and HIGH (CVSS v4.0: 8....

CVE-2026-40423 BIG-IP SIP profile vulnerability

When a SIP profile is configured on a virtual server, undisclosed traffic can cause the Traffic Management Microkernel TMM to terminate. Note: Software versions which have reached End of Technical Support EoTS are not evaluated...

resolver use-after-free in OCSP

resolver use-after-free in OCSP Severity: medium CVE-2026-40701 Not vulnerable: 1.31.0+, 1.30.1+ Vulnerable: 1.19.0-1.30.0...

CVE-2026-42937 iControl REST and tmsh vulnerability

Incorrect permission assignment vulnerabilities exist in BIG-IP and BIG-IQ TMOS Shell tmsh arp and ndp commands, and in BIG-IP iControl REST. These vulnerabilities may allow an authenticated attacker to view adjacent network information. Note: Software versions which have reached End of Technical...

CVE-2026-39455

When the BIG-IP Configuration utility is configured to use Lightweight Directory Access Protocol LDAP authentication, undisclosed traffic can cause the httpd process to exhaust the available file descriptors. Note: Software versions which have reached End of Technical Support EoTS are not...

CVE-2026-39455 BIG-IP Configuration utility vulnerability

When the BIG-IP Configuration utility is configured to use Lightweight Directory Access Protocol LDAP authentication, undisclosed traffic can cause the httpd process to exhaust the available file descriptors. Note: Software versions which have reached End of Technical Support EoTS are not...

CVE-2026-40698 iControl REST and TMSH vulnerability

A vulnerability exists in BIG-IP and BIG-IQ systems where a highly privileged, authenticated attacker with at least the Resource Administrator role can create SNMP configuration objects through iControl REST or the TMOS shell tmsh resulting in privilege escalation. Note: Software versions which...

CVE-2026-42920

CVE-2026-42920 affects BIG-IP DTLS: when a Client SSL profile has Allow Dynamic Record Sizing on a UDP virtual server, undisclosed traffic can cause the Traffic Management Microkernel (TMM) to terminate, resulting in a DoS as TMM restarts. The F5 advisory notes this is a data-plane issue with rem...

CVE-2026-41956

CVE-2026-41956 affects BIG-IP TMM. When a classification profile is configured on a UDP virtual server, undisclosed requests can cause TMM termination, producing DoS on the BIG-IP data plane. From F5 advisories, vulnerable lines include BIG-IP (all modules) UDP virtual servers across 17.x and 21....

CVE-2026-42920 BIG-IP DTLS Vulnerability

When a Client SSL profile is configured with Allow Dynamic Record Sizing on a UDP virtual server, undisclosed traffic can cause the Traffic Management Microkernel TMM to terminate. Note: Software versions which have reached End of Technical Support EoTS are not evaluated...

CVE-2026-42920

When a Client SSL profile is configured with Allow Dynamic Record Sizing on a UDP virtual server, undisclosed traffic can cause the Traffic Management Microkernel TMM to terminate. Note: Software versions which have reached End of Technical Support EoTS are not evaluated...

CVE-2026-34019 BIG-IP BFD vulnerability

When Bidirectional Forwarding Detection BFD is configured in Static and Dynamic routing protocols, undisclosed traffic can cause the Traffic Management Microkernel TMM to stop processing BFD packets and cause the configured routing protocol to fail over. Note: Software versions which have reached...

CVE-2026-34019

CVE-2026-34019 affects F5 BIG-IP when BFD is enabled with Static/Dynamic routing; crafted traffic can cause TMM to stop processing BFD and trigger routing protocol failover. Impact: DoS to the configured routing protocol (data plane issue). Remediation per F5 advisory K000150508: disclose vulnera...

CVE-2026-39806

The CVE-2026-39806 issue affects Bandit (Elixir.Bandit.HTTP1.Socket) where do_read_chunked_data!/5 loops indefinitely when a chunked request includes trailer fields. The root cause is that RFC 9112 §7.1.2 allows trailers after the 0-length chunk, but the code exits only when the next line is imme...

CVE-2026-8369 Improper Input Validation in OpenThread NAT64 Translator

Improper Input Validation in the NAT64 translator in The OpenThread Authors OpenThread before commit 26a882d on all platforms allows an attacker on the adjacent IPv4 network to inject corrupted IPv6 packets into the Thread mesh or bypass security checks via crafted IPv4 packets with options...

CVE-2026-8369 Improper Input Validation in OpenThread NAT64 Translator

Improper Input Validation in the NAT64 translator in The OpenThread Authors OpenThread before commit 26a882d on all platforms allows an attacker on the adjacent IPv4 network to inject corrupted IPv6 packets into the Thread mesh or bypass security checks via crafted IPv4 packets with options...

CVE-2026-4873

A vulnerability exists where a connection requiring TLS incorrectly reuses an existing unencrypted connection from the same connection pool. If an initial transfer is made in clear-text via IMAP, SMTP, or POP3, a subsequent request to that same host bypasses the TLS requirement and instead transm...

K000150508: BIG-IP BFD vulnerability CVE-2026-34019

Security Advisory Description When Bidirectional Forwarding Detection BFD is configured in Static and Dynamic routing protocols, undisclosed traffic can cause the Traffic Management Microkernel TMM to stop processing BFD packets and cause the configured routing protocol to fail over. CVE-2026-340...

CLSA-2026-1778674879 opensc: Fix of CVE-2024-45619

CVE-2024-45619: fix incorrect access of initialized parts of partially filled buffers triggered by crafted APDU responses from USB devices or smart cards...

Improper Certificate Validation

Overview Affected versions of this package are vulnerable to Improper Certificate Validation in the OCSP stapling process with Apple SecTrust. An attacker can cause the client to accept invalid or revoked server certificates by exploiting the failure to properly detect OCSP response problems. Not...