7.5

CVE-2021-22973: f5 big-ip_access_policy_manager Out-of-bounds Write

CVSS: 7.5v3.1HighModified
Published 12-02-2021Last modified 03-08-2024
Open JSON

Vulnerability summary

CVE-2021-22973 is a high (CVSS 7.5) Out-of-bounds Write vulnerability in f5 big-ip_access_policy_manager. EPSS estimates a 1.02% chance of exploitation in the next 30 days, higher than 63.1% of scored vulnerabilities.

Overall risk
30/100
0100
Medium · default modelHow is this calculated?
CVSS score
7.5/10
010
High · v3.1 (NVD)
EPSS score
1.02%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Timeline

  1. 12-02-2021
    PublishedVulnerability first disclosed.
  2. 03-08-2024
    Last modifiedVulnerability information updated.

Description

On BIG-IP version 16.0.x before 16.0.1.1, 15.1.x before 15.1.2, 14.1.x before 14.1.3.1, 13.1.x before 13.1.3.5, and all 12.1.x versions, JSON parser function does not protect against out-of-bounds memory accesses or writes. Note: Software versions which have reached End of Software Development (EoSD) are not evaluated.

CVSS metrics

2 scores · 1 source · 2 versions

EPSS trend

Probability

1.02%

Chance of exploitation in the next 30 days

Percentile

63%

Versus all other CVEs

30-day change

0.00 pp

From 1.02% on 21-09-2026

21-09-202621-10-2026
EPSS score
1.02%

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

F510 products
  • big-ip_access_policy_manager≥ 12.1.0, ≤ 12.1.5 | ≥ 13.1.0, < 13.1.3.5 | ≥ 14.1.0, < 14.1.3.1 | ≥ 15.1.0, < 15.1.2 | ≥ 16.0.0, < 16.0.1.1
  • big-ip_advanced_firewall_manager≥ 12.1.0, ≤ 12.1.5 | ≥ 13.1.0, < 13.1.3.5 | ≥ 14.1.0, < 14.1.3.1 | ≥ 15.1.0, < 15.1.2 | ≥ 16.0.0, < 16.0.1.1
  • big-ip_analytics≥ 12.1.0, ≤ 12.1.5 | ≥ 13.1.0, < 13.1.3.5 | ≥ 14.1.0, < 14.1.3.1 | ≥ 15.1.0, < 15.1.2 | ≥ 16.0.0, < 16.0.1.1
  • big-ip_application_acceleration_manager≥ 12.1.0, ≤ 12.1.5 | ≥ 13.1.0, < 13.1.3.5 | ≥ 14.1.0, < 14.1.3.1 | ≥ 15.1.0, < 15.1.2 | ≥ 16.0.0, < 16.0.1.1
  • big-ip_application_security_manager≥ 12.1.0, ≤ 12.1.5 | ≥ 13.1.0, < 13.1.3.5 | ≥ 14.1.0, < 14.1.3.1 | ≥ 15.1.0, < 15.1.2 | ≥ 16.0.0, < 16.0.1.1

1 vendor · 10 products

References

1 links