Vulnerability in F5 Big-Ip Access Policy Manager
CVE-2020-5938
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.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N.
EPSS exploit prediction
EPSS: 0.005 (42.5th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 43rd percentile — 42.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.005 · newest: 0.005 · change: 0.000
Affected products
- F5 Big-Ip Access Policy Manager
- F5 Big-Ip Advanced Firewall Manager
- F5 Big-Ip Advanced Web Application Firewall
- F5 Big-Ip Analytics
- F5 Big-Ip Application Acceleration Manager
- F5 Big-Ip Application Security Manager
- F5 Big-Ip Ddos Hybrid Defender
- F5 Big-Ip Domain Name System
- F5 Big-Ip Fraud Protection Service
- F5 Big-Ip Global Traffic Manager
Weakness classification (CWE)
References
- support.f5.com/csp/article/K76610106 (Vendor Advisory)
Frequently asked questions
- What is CVE-2020-5938?
- CVE-2020-5938 is a medium-severity vulnerability in F5 Big-Ip Access Policy Manager, classified under Inadequate Encryption Strength. CVSS score: 6.5/10. Published 2020-10-29.
- How severe is CVE-2020-5938?
- Medium severity. CVSS v3 base score is 6.5 out of 10.