7.4

CVE-2020-5913: f5 big-ip_access_policy_manager Improper Certificate Validation

Modified
Published 26-08-2020Last modified 04-08-2024

Vulnerability summary

CVE-2020-5913 is a high (CVSS 7.4) Improper Certificate Validation vulnerability in f5 big-ip_access_policy_manager. EPSS estimates a 0.50% chance of exploitation in the next 30 days, higher than 41.8% of scored vulnerabilities.

Overall risk
30/100
0100
Medium · default modelHow is this calculated?
CVSS score
7.4/10
010
High · v3.1 (NVD)
EPSS score
0.50%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits0No public exploits recorded

Timeline

  1. 26-08-2020
    PublishedVulnerability first disclosed.
  2. 04-08-2024
    Last modifiedVulnerability information updated.

Description

In versions 15.0.0-15.1.0.1, 14.1.0-14.1.2.3, 13.1.0-13.1.3.4, 12.1.0-12.1.5.1, and 11.6.1-11.6.5.2, the BIG-IP Client or Server SSL profile ignores revoked certificates, even when a valid CRL is present. This impacts SSL/TLS connections and may result in a man-in-the-middle attack on the connections.

CVSS metrics

2 scores · 1 source · 2 versions

EPSS trend

Probability

0.50%

Chance of exploitation in the next 30 days

Percentile

42%

Versus all other CVEs

30-day change

No change 0.00 pp

From 0.50% on 22-09-2026

22-09-202622-10-2026

Known exploited

Compare KEV catalogs
CISA KEV

Not in the CISA KEV catalog.

ENISA CNW

Not in the ENISA CNW catalog.

CIRCL

Not in the CIRCL catalog.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

F514 products
  • big-ip_access_policy_manager≥ 11.6.1, < 11.6.5 | ≥ 12.1.0, < 12.1.5.2 | ≥ 13.1.0, < 13.1.3 | ≥ 14.1.0, < 14.1.2-0.89.37 | ≥ 14.1.2.1, < 14.1.2.5 | ≥ 15.0.0, < 15.0.1.2
  • big-ip_advanced_firewall_manager≥ 11.6.1, < 11.6.5 | ≥ 12.1.0, < 12.1.5.2 | ≥ 13.1.0, < 13.1.3 | ≥ 14.1.0, < 14.1.2-0.89.37 | ≥ 14.1.2.1, < 14.1.2.5 | ≥ 15.0.0, < 15.0.1.2
  • big-ip_advanced_web_application_firewall≥ 11.6.1, < 11.6.5 | ≥ 12.1.0, < 12.1.5.2 | ≥ 13.1.0, < 13.1.3 | ≥ 14.1.0, < 14.1.2-0.89.37 | ≥ 14.1.2.1, < 14.1.2.5 | ≥ 15.0.0, < 15.0.1.2
  • big-ip_analytics≥ 11.6.1, < 11.6.5 | ≥ 12.1.0, < 12.1.5.2 | ≥ 13.1.0, < 13.1.3 | ≥ 14.1.0, < 14.1.2-0.89.37 | ≥ 14.1.2.1, < 14.1.2.5 | ≥ 15.0.0, < 15.0.1.2
  • big-ip_application_acceleration_manager≥ 11.6.1, < 11.6.5 | ≥ 12.1.0, < 12.1.5.2 | ≥ 13.1.0, < 13.1.3 | ≥ 14.1.0, < 14.1.2-0.89.37 | ≥ 14.1.2.1, < 14.1.2.5 | ≥ 15.0.0, < 15.0.1.2

1 vendor · 14 products

References

1 links