CVE-2021-22982: f5 big-ip_domain_name_system Classic Buffer Overflow
CVSS: 7.2v3.1HighModified
Published 12-02-2021Last modified 03-08-2024
Vulnerability summary
CVE-2021-22982 is a high (CVSS 7.2) Classic Buffer Overflow vulnerability in f5 big-ip_domain_name_system. EPSS estimates a 1.03% chance of exploitation in the next 30 days, higher than 63.2% of scored vulnerabilities.
CVSS score
7.2/10
010
High · v3.1 (NVD)EPSS score
1.03%
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 DNS and GTM version 13.1.x before 13.1.0.4, and all versions of 12.1.x and 11.6.x, big3d does not securely handle and parse certain payloads resulting in a buffer overflow. Note: Software versions which have reached End of Software Development (EoSD) are not evaluated.
CVSS metrics
2 scores · 1 source · 2 versionsHigh 7.2Preferred score · NVD (NIST)
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:HSourcesSingle source
Medium 6.5Preferred score · NVD (NIST)
AV:N/AC:L/Au:S/C:P/I:P/A:PSourcesSingle source
EPSS trend
Probability
1.03%
Chance of exploitation in the next 30 days
Percentile
63%
Versus all other CVEs
30-day change
0.00 pp
From 1.03% on 21-09-2026
21-09-202621-10-2026
EPSS score1.03%
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
F52 products
- big-ip_domain_name_system≥ 12.1.0, ≤ 12.1.5 | ≥ 13.1.0, < 13.1.0.4
- big-ip_global_traffic_manager≥ 11.6.1, ≤ 11.6.5
1 vendor · 2 products