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No exploitation reported

CVE-2021-23031

No exploitation reported by the sources we read.

  • Published2021-09-14
  • WeaknessCWE-78

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

On version 16.0.x before 16.0.1.2, 15.1.x before 15.1.3, 14.1.x before 14.1.4.1, 13.1.x before 13.1.4, 12.1.x before 12.1.6, and 11.6.x before 11.6.5.3, an authenticated user may perform a privilege escalation on the BIG-IP Advanced WAF and ASM Configuration utility. Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.

Timeline

dates in UTC
  1. 2021-09-1419:15CVE publishedNVD

Observed activity

isMalicious corpus · updated 2026-10-23 18:48 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-2021-23031?format=txt
  • CSV export: https://api.ismalicious.com/edl/cve/CVE-2021-23031?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 advanced web application firewall
BranchAffectedFixed in
11.6≥ 11.6.1, ≤ 11.6.5.2no fix published
12.1≥ 12.1.0, ≤ 12.1.5no fix published
13.1≥ 13.1.0, ≤ 13.1.3no fix published
14.1≥ 14.1.0, ≤ 14.1.4no fix published
15.1≥ 15.1.0, ≤ 15.1.2no fix published
16.0≥ 16.0.0, ≤ 16.0.1.1no fix published
F5 big-ip application security manager
BranchAffectedFixed in
11.6≥ 11.6.1, ≤ 11.6.5.2no fix published
12.1≥ 12.1.0, ≤ 12.1.5no fix published
13.1≥ 13.1.0, ≤ 13.1.3no fix published
14.1≥ 14.1.0, ≤ 14.1.4no fix published
15.1≥ 15.1.0, ≤ 15.1.2no fix published
16.0≥ 16.0.0, ≤ 16.0.1.1no fix published

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

Fix

Advisories and patches

Detection

Nuclei template
none so far
ProjectDiscovery
Exploit-DB
no entry
Exploit-DB
Proof-of-concept repositories
none listed
PoC-in-GitHub

Sources

  • NVDCVSS 3.19.9read 2026-10-23
  • NVDCVSS 2.06.5read 2026-10-23
  • CNAweakness (CWE)CWE-78read 2026-10-23
  • NVDweakness (CWE)CWE-78read 2026-10-23
  • FIRST EPSSEPSS score2.8 %2026-10-22

Technical details

CVSS v3 Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
Published
2021-09-14
Last Modified
2026-06-17
NVD status
Modified

Frequently asked questions

What is CVE-2021-23031?

On version 16.0.x before 16.0.1.2, 15.1.x before 15.1.3, 14.1.x before 14.1.4.1, 13.1.x before 13.1.4, 12.1.x before 12.1.6, and 11.6.x before 11.6.5.3, an authenticated user may perform a privilege escalation on the BIG-IP Advanced WAF and ASM Configuration utility. Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.

Is CVE-2021-23031 actively exploited?

Active exploitation of CVE-2021-23031 has not been confirmed. Its EPSS score was 2.8% on 2026-10-22, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2021-23031?

CVE-2021-23031 has a CVSS v3 base score of 9.9 (CRITICAL severity), with vector string CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H.

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