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Vulnerabilities

Vulnerability · CVE-2026-42408

When BIG-IP DNS is provisioned, a vulnerability exists in an undisclosed TMOS Shell (tmsh) command that may allow a highly privileged authenticated attacker to view se…

Published May 13, 2026 · catalog updated Jun 23, 2026 · big-ip access policy manager

Check if you run it

No confirmed exploitation is on record for CVE-2026-42408. EPSS is 0.11%. Act only if a listed version of big-ip access policy manager is installed.

Gaps on this record

  • No version range is stored. A customer cannot check an installed version against this record.
  • No vendor fix or required action is stored. Compare the linked advisory before you change production.
Severity
Medium6.7
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
0.11%
Remediation
Not established
Affected products
cpe f5/big-ip access policy manager · cpe f5/big-ip advanced firewall manager · cpe f5/big-ip advanced web application firewall · cpe f5/big-ip analytics · cpe f5/big-ip application acceleration manager · cpe f5/big-ip application security manager

When BIG-IP DNS is provisioned, a vulnerability exists in an undisclosed TMOS Shell (tmsh) command that may allow a highly privileged authenticated attacker to view sensitive information. Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • cpe f5/big-ip access policy managerversion unspecified
  • cpe f5/big-ip advanced firewall managerversion unspecified
  • cpe f5/big-ip advanced web application firewallversion unspecified
  • cpe f5/big-ip analyticsversion unspecified
  • cpe f5/big-ip application acceleration managerversion unspecified
  • cpe f5/big-ip application security managerversion unspecified
  • cpe f5/big-ip application visibility and reportingversion unspecified
  • cpe f5/big-ip automation toolchainversion unspecified

How to fix CVE-2026-42408

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

No confirmed exploitation is on record for CVE-2026-42408. EPSS is 0.11%. Act only if a listed version of big-ip access policy manager is installed.

Which versions are affected?

Affected version ranges are not on this record. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

CWE-312: Cleartext Storage of Sensitive Information. EPSS 0.11%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Code

The project this record applies to. Exploit listings stay in References.

No public source repository is identified for this product.

Timeline

Detection, updates, and resolution for this record.

  1. May 13, 2026 · NIST NVD

    Detected

    When BIG-IP DNS is provisioned, a vulnerability exists in an undisclosed TMOS Shell (tmsh) command that may allow a highly privileged authenticated attacker to view sensitive information. Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.

  2. Jun 23, 2026 · NIST NVD

    Updated

    When BIG-IP DNS is provisioned, a vulnerability exists in an undisclosed TMOS Shell (tmsh) command that may allow a highly privileged authenticated attacker to view sensitive information. Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.

Sources

  • CVE.orgVulnerability recordCVE-2026-42408

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2026-42408

    30-day exploitation probability 0.1%

    first.org
  • NIST NVDVulnerability recordCVE-2026-42408

    When BIG-IP DNS is provisioned, a vulnerability exists in an undisclosed TMOS Shell (tmsh) command that may allow a highly privileged authenticated attacker to view sensitive information. Note: Software versions which have reached End of Technical Support (EoTS) are not evaluate

    nvd.nist.gov

References

Freshness

Last verified in this catalog Oct 18, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.

CVE-2026-42408: big-ip access policy manager — When BIG-IP DNS is p… · ZeroDay Findings