CVE-2009-5155

mediumpriority · track · 31EPSS 0.039 · 90 %ileEURUUS

grimoire priorityP3 · Track

Exploitable?

—

no known exploitation

Likely / severe?

3.91% (90th) EPSS

CVSS 5 · medium

Is it mine?

110 products

Check your exposure

Who says so?

3 sources

cnnvd · enisa_euvd · fstec_bdu

EPSS · scored 2026-10-27

In the GNU C Library (aka glibc or libc6) before 2.28, parse_reg_exp in posix/regcomp.c misparses alternatives, which allows attackers to cause a denial of service (assertion failure and application exit) or trigger an incorrect result by attempting a regular-expression match.

cvss

Technical severity, 0–10. One row per scoring source.

7.5

010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · medium–high · 5–7.5

v2.05mediumAV:N/AC:L/Au:N/C:N/I:N/A:Pprimary · NVD / NIST USexploitability 10 · impact 2.9

v3.07.5highCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:Hprimary · NVD / NIST USexploitability 3.9 · impact 3.6

v3.06.9mediumCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:Usecondary · CVSS-BT (t0sche)

v3.17.5highAV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:Hsecondary · FSTEC (BDU) RU

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-19USprimaryCWE-19US

affected products (110)

Products and version ranges known to be affected.

n/a n/a≤ n/aenisa_euvdEU
Canonical Ltd. Ubuntu≤ 16.04 ESMfstec_bduRU
F5 Networks, Inc. BIG-IP Access Policy Manager11.5.1 → 11.6.5fstec_bduRU
F5 Networks, Inc. BIG-IP Access Policy Manager12.1.0 → 12.1.6fstec_bduRU
F5 Networks, Inc. BIG-IP Access Policy Manager13.0.0 → 13.1.4fstec_bduRU
F5 Networks, Inc. BIG-IP Access Policy Manager14.0.0 → 14.1.4fstec_bduRU
F5 Networks, Inc. BIG-IP Access Policy Manager15.0.0 → 15.1.3fstec_bduRU
F5 Networks, Inc. BIG-IP Access Policy Manager16.0.0 → 16.1.0fstec_bduRU
F5 Networks, Inc. BIG-IP Advanced Firewall Manager11.5.1 → 11.6.5fstec_bduRU
F5 Networks, Inc. BIG-IP Advanced Firewall Manager12.1.0 → 12.1.6fstec_bduRU
F5 Networks, Inc. BIG-IP Advanced Firewall Manager13.0.0 → 13.1.4fstec_bduRU
F5 Networks, Inc. BIG-IP Advanced Firewall Manager14.0.0 → 14.1.4fstec_bduRU
F5 Networks, Inc. BIG-IP Advanced Firewall Manager15.0.0 → 15.1.3fstec_bduRU
F5 Networks, Inc. BIG-IP Advanced Firewall Manager16.0.0 → 16.1.0fstec_bduRU
F5 Networks, Inc. BIG-IP Analytics11.5.1 → 11.6.5fstec_bduRU
F5 Networks, Inc. BIG-IP Analytics12.1.0 → 12.1.6fstec_bduRU
F5 Networks, Inc. BIG-IP Analytics13.0.0 → 13.1.4fstec_bduRU
F5 Networks, Inc. BIG-IP Analytics14.0.0 → 14.1.4fstec_bduRU
F5 Networks, Inc. BIG-IP Analytics15.0.0 → 15.1.3fstec_bduRU
F5 Networks, Inc. BIG-IP Analytics16.0.0 → 16.1.0fstec_bduRU

showing 20 of 110

also known as (4)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd fstec_bdu NVD CVE.org MITRE

published 2019-02-26modified 2026-06-16

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references (55)

External citations — patches, advisories, analysis.

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