TMM vulnerability CVE-2022-34655

published 2022-08-04 4 y ago modified 2026-06-17 4 mo ago also EUVD-2022-37607

cvss: 7.5; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 0.8%; EPSS 0.8% chance of exploitation in 30 days, percentile 56%
public exploits: 0; none known

In BIG-IP Versions 16.0.x before 16.0.1.1, 15.1.x before 15.1.6.1, and 14.1.x before 14.1.5, when an iRule containing the HTTP::payload command is configured on a virtual server, undisclosed traffic can cause Traffic Management Microkernel (TMM) to terminate. Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.

Patch / fix

fixed in 1

F5 BIG-IP 14.1.5, 15.1.6.1, 16.0.1.1

Exploit prediction

0.78% chance of exploitation in the next 30 days, higher than 56% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by	version	score	vector
CNA	3.1	7.5	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
NVD	3.1	7.5	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Affected products

F5 BIG-IP

Classification

Weakness

CWE-457 Use of Uninitialized Variable
CWE-908 Use of Uninitialized Resource

References

support.f5.com /csp/article/K93504311
vendor-advisory

Sources

CVE List CVE-2022-34655
NVD CVE-2022-34655

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

Summary