BIG-IP PEM vulnerability

published 2024-02-14 2 y ago modified 2026-06-17 4 mo ago also EUVD-2024-21408

cvss: 7.5; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 0.5%; EPSS 0.5% chance of exploitation in 30 days, percentile 44%
public exploits: 0; none known

When a BIG-IP PEM classification profile is configured on a UDP virtual server, undisclosed requests can cause the Traffic Management Microkernel (TMM) to terminate. This issue affects classification engines using signatures released between 09-08-2022 and 02-16-2023. See the table in the F5 Security Advisory for a complete list of affected classification signature files. NOTE: Software versions which have reached End of Technical Support (EoTS) are not evaluated

CISA SSVC

Exploitation: none
Automatable: yes
Technical impact: partial
Assessed: 2 y ago (2024-08-21)

Exploit prediction

0.52% chance of exploitation in the next 30 days, higher than 44% 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
f5 big-ip_pem

Classification

Weakness

CWE-121 Stack-based Buffer Overflow
CWE-787 Out-of-bounds Write

References

my.f5.com /manage/s/article/K000135946
vendor-advisory

Sources

CVE List CVE-2024-23982
NVD CVE-2024-23982

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Summary