No exploitation reportedFix available

CVE-2020-5914

Q: Is CVE-2020-5914 actively exploited?

Active exploitation of CVE-2020-5914 has not been confirmed. Its EPSS score was 1.1% on 2026-10-23, the estimated probability of exploitation in the next 30 days.

Q: What is the CVSS score for CVE-2020-5914?

CVE-2020-5914 has a CVSS v3 base score of 7.5 (HIGH severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

No exploitation reported by the sources we read.

Published2020-08-26
Fixed in15.1.0.5 · 15.0.1.4 · 14.1.2.5 · 13.1.3.4 · 12.1.5.2 · 11.6.5.2

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

Description

In BIG-IP ASM versions 15.1.0-15.1.0.4, 15.0.0-15.0.1.3, 14.1.0-14.1.2.3, 13.1.0-13.1.3.3, 12.1.0-12.1.5.1, and 11.6.1-11.6.5.1, undisclosed server cookie scenario may cause BD to restart under some circumstances.

Timeline

dates in UTC

2020-08-2615:15CVE publishedNVD

Observed activity

isMalicious corpus · updated 2026-10-23 21:37 UTC

Indicators tagged with this CVE, per day0 indicators over 7 days

Block these indicators

Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2020-5914?format=txt
CSV export: https://api.ismalicious.com/edl/cve/CVE-2020-5914?format=csv
TAXII collection of exploited CVEs
The EDL and CSV take an API key on the Pro plan.

Versions per branch

NVD

F5 big-ip application security manager

Branch	Affected	Fixed in	Source
15.1	≥ 15.1.0, < 15.1.0.5	15.1.0.5	NVD
15.0	≥ 15.0.0, < 15.0.1.4	15.0.1.4	NVD
14.1	≥ 14.1.0, < 14.1.2.5	14.1.2.5	NVD
13.1	≥ 13.1.0, < 13.1.3.4	13.1.3.4	NVD
12.1	≥ 12.1.0, < 12.1.5.2	12.1.5.2	NVD
11.x	≥ 11.5.2, < 11.6.5.2	11.6.5.2	NVD

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Fix

Update F5 big-ip application security manager to 15.1.0.5 · 15.0.1.4 · 14.1.2.5 · 13.1.3.4 · 12.1.5.2 · 11.6.5.2

Advisories and patches

support.f5.comVendor Advisory

Detection

Nuclei template: none so far
Exploit-DB: no entry
Proof-of-concept repositories: none listed

Sources

NVDCVSS 3.17.5read 2026-10-23
NVDCVSS 2.05read 2026-10-23
FIRST EPSSEPSS score1.1 %2026-10-23

Technical details

CVSS v3 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Published: 2020-08-26
Last Modified: 2026-06-17
NVD status: Modified

Frequently asked questions

What is CVE-2020-5914?

Is CVE-2020-5914 actively exploited?

Active exploitation of CVE-2020-5914 has not been confirmed. Its EPSS score was 1.1% on 2026-10-23, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2020-5914?

CVE-2020-5914 has a CVSS v3 base score of 7.5 (HIGH severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

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