CVE-2021-22977: f5 big-ip_access_policy_manager
CVSS: 7.5v3.1HighModified
Published 12-02-2021Last modified 03-08-2024
Vulnerability summary
CVE-2021-22977 is a high (CVSS 7.5) vulnerability in f5 big-ip_access_policy_manager. EPSS estimates a 1.06% chance of exploitation in the next 30 days, higher than 63.8% of scored vulnerabilities.
CVSS score
7.5/10
010
High · v3.1 (NVD)EPSS score
1.06%
0%100%
Low · 0.00 pp in 30 daysKEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded
Timeline
- 12-02-2021PublishedVulnerability first disclosed.
- 03-08-2024Last modifiedVulnerability information updated.
Description
On BIG-IP version 16.0.0-16.0.1 and 14.1.2.4-14.1.3, cooperation between malicious HTTP client code and a malicious server may cause TMM to restart and generate a core file. Note: Software versions which have reached End of Software Development (EoSD) are not evaluated.
CVSS metrics
2 scores · 1 source · 2 versionsHigh 7.5Preferred score · NVD (NIST)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:HSourcesSingle source
Medium 5.0Preferred score · NVD (NIST)
AV:N/AC:L/Au:N/C:N/I:N/A:PSourcesSingle source
EPSS trend
Probability
1.06%
Chance of exploitation in the next 30 days
Percentile
64%
Versus all other CVEs
30-day change
0.00 pp
From 1.06% on 19-09-2026
19-09-202619-10-2026
EPSS score1.06%
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeNo weakness data has been published for this record.
Affected systems
F514 products
- big-ip_access_policy_manager≥ 14.1.0, < 14.1.3.1 | ≥ 16.0.0, < 16.0.1.1
- big-ip_advanced_firewall_manager≥ 14.1.0, < 14.1.3.1 | ≥ 16.0.0, < 16.0.1.1
- big-ip_advanced_web_application_firewall≥ 14.1.0, < 14.1.3.1 | ≥ 16.0.0, < 16.0.1.1
- big-ip_analytics≥ 14.1.0, < 14.1.3.1 | ≥ 16.0.0, < 16.0.1.1
- big-ip_application_acceleration_manager≥ 14.1.0, < 14.1.3.1 | ≥ 16.0.0, < 16.0.1.1
1 vendor · 14 products