7.5

CVE-2021-22999: f5 big-ip_access_policy_manager

CVSS: 7.5v3.1HighModified
Published 31-03-2021Last modified 03-08-2024
Open JSON

Vulnerability summary

CVE-2021-22999 is a high (CVSS 7.5) vulnerability in f5 big-ip_access_policy_manager. EPSS estimates a 0.96% chance of exploitation in the next 30 days, higher than 60.8% of scored vulnerabilities.

Overall risk
30/100
0100
Medium · default modelHow is this calculated?
CVSS score
7.5/10
010
High · v3.1 (NVD)
EPSS score
0.96%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Timeline

  1. 31-03-2021
    PublishedVulnerability first disclosed.
  2. 03-08-2024
    Last modifiedVulnerability information updated.

Description

On versions 15.0.x before 15.1.0 and 14.1.x before 14.1.4, the BIG-IP system provides an option to connect HTTP/2 clients to HTTP/1.x servers. When a client is slow to accept responses and it closes a connection prematurely, the BIG-IP system may indefinitely retain some streams unclosed. Note: Software versions which have reached End of Software Development (EoSD) are not evaluated.

CVSS metrics

2 scores · 1 source · 2 versions

EPSS trend

Probability

0.96%

Chance of exploitation in the next 30 days

Percentile

61%

Versus all other CVEs

30-day change

0.00 pp

From 0.96% on 18-09-2026

18-09-202618-10-2026
EPSS score
0.96%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

No weakness data has been published for this record.

Affected systems

F514 products

1 vendor · 14 products

References

1 links