CVE-2020-5938: f5 big-ip_access_policy_manager Inadequate Encryption Strength
CVSS: 6.5v3.1MediumModified
Published 29-10-2020Last modified 04-08-2024
Vulnerability summary
CVE-2020-5938 is a medium (CVSS 6.5) Inadequate Encryption Strength vulnerability in f5 big-ip_access_policy_manager. EPSS estimates a 0.53% chance of exploitation in the next 30 days, higher than 43.6% of scored vulnerabilities.
CVSS score
6.5/10
010
Medium · v3.1 (NVD)EPSS score
0.53%
0%100%
Low · 0.00 pp in 30 daysKEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded
Timeline
- 29-10-2020PublishedVulnerability first disclosed.
- 04-08-2024Last modifiedVulnerability information updated.
Description
On BIG-IP 13.1.0-13.1.3.4, 12.1.0-12.1.5.2, and 11.6.1-11.6.5.2, when negotiating IPSec tunnels with configured, authenticated peers, the peer may negotiate a different key length than the BIG-IP configuration would otherwise allow.
CVSS metrics
2 scores · 1 source · 2 versionsMedium 6.5Preferred score · NVD (NIST)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:NSourcesSingle source
Medium 4.0Preferred score · NVD (NIST)
AV:N/AC:L/Au:S/C:P/I:N/A:NSourcesSingle source
EPSS trend
Probability
0.53%
Chance of exploitation in the next 30 days
Percentile
44%
Versus all other CVEs
30-day change
0.00 pp
From 0.53% on 19-09-2026
19-09-202619-10-2026
EPSS score0.53%
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
F514 products
- big-ip_access_policy_manager≥ 11.6.1, ≤ 11.6.5.2 | ≥ 12.1.0, ≤ 12.1.5.2 | ≥ 13.1.0, ≤ 13.1.3.4
- big-ip_advanced_firewall_manager≥ 11.6.1, ≤ 11.6.5.2 | ≥ 12.1.0, ≤ 12.1.5.2 | ≥ 13.1.0, ≤ 13.1.3.4
- big-ip_advanced_web_application_firewall≥ 11.6.1, ≤ 11.6.5.2 | ≥ 12.1.0, ≤ 12.1.5.2 | ≥ 13.1.0, ≤ 13.1.3.4
- big-ip_analytics≥ 11.6.1, ≤ 11.6.5.2 | ≥ 12.1.0, ≤ 12.1.5.2 | ≥ 13.1.0, ≤ 13.1.3.4
- big-ip_application_acceleration_manager≥ 11.6.1, ≤ 11.6.5.2 | ≥ 12.1.0, ≤ 12.1.5.2 | ≥ 13.1.0, ≤ 13.1.3.4
1 vendor · 14 products