NULL pointer dereference in F5 Big-Ip

CVE-2026-2507

When BIG-IP AFM or BIG-IP DDoS is provisioned, undisclosed traffic can cause TMM to terminate.  Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.

Published · last modified .

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

EPSS exploit prediction

EPSS: 0.003 (19.4th percentile), scored .

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 19th percentile — 19.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS trend (30 days)EPSS over the last 30 days for CVE-2026-2507: held from 0.003 to 0.003.

EPSS over last 30 days · oldest: 0.003 · newest: 0.003 · change: +0.000

Affected products

  • F5 Big-Ip — versions 21.0.0, 17.5.1.4, 17.1.0

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2026-2507?
CVE-2026-2507 is a high-severity vulnerability in F5 Big-Ip, classified under NULL Pointer Dereference. CVSS score: 7.5/10. Published 2026-02-18.
How severe is CVE-2026-2507?
High severity. CVSS v3 base score is 7.5 out of 10.