9.9

CVE-2021-23031: f5 big-ip_advanced_web_application_firewall OS Command Injection

CVSS: 9.9v3.1CriticalModified
Published 14-09-2021Last modified 03-08-2024
Open JSON

Vulnerability summary

CVE-2021-23031 is a critical (CVSS 9.9) OS Command Injection vulnerability in f5 big-ip_advanced_web_application_firewall. EPSS estimates a 2.81% chance of exploitation in the next 30 days, higher than 86.4% of scored vulnerabilities.

Overall risk
70/100
0100
High · default modelHow is this calculated?
CVSS score
9.9/10
010
Critical · v3.1 (NVD)
EPSS score
2.81%
0%100%
Low · +0.74 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Timeline

  1. 14-09-2021
    PublishedVulnerability first disclosed.
  2. 03-08-2024
    Last modifiedVulnerability information updated.

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.

CVSS metrics

2 scores · 1 source · 2 versions

EPSS trend

Probability

2.81%

Chance of exploitation in the next 30 days

Percentile

86%

Versus all other CVEs

30-day change

+0.74 pp

From 2.07% on 21-09-2026

21-09-202621-10-2026
EPSS score
2.81%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

F52 products
  • big-ip_advanced_web_application_firewall≥ 11.6.1, ≤ 11.6.5.2 | ≥ 12.1.0, ≤ 12.1.5 | ≥ 13.1.0, ≤ 13.1.3 | ≥ 14.1.0, ≤ 14.1.4 | ≥ 15.1.0, ≤ 15.1.2 | ≥ 16.0.0, ≤ 16.0.1.1
  • big-ip_application_security_manager≥ 11.6.1, ≤ 11.6.5.2 | ≥ 12.1.0, ≤ 12.1.5 | ≥ 13.1.0, ≤ 13.1.3 | ≥ 14.1.0, ≤ 14.1.4 | ≥ 15.1.0, ≤ 15.1.2 | ≥ 16.0.0, ≤ 16.0.1.1

1 vendor · 2 products

References

1 links