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CVE-2021-22987

36
FAUCET Score

CVE-2021-22987 is a critical authenticated remote command execution vulnerability affecting F5 BIG-IP appliances running in Appliance mode, specifically within the Traffic Management User Interface (TMUI). With a CVSS score of 9.9, it allows a low-privileged authenticated attacker to execute arbitrary commands with high impact on confidentiality, integrity, and availability. While there is no public exploit code available in common databases like Metasploit or ExploitDB, the vulnerability has garnered significant community discussion and media coverage, indicating high awareness and potential for future exploitation. Organizations are strongly urged to patch affected systems immediately to mitigate this severe risk.

Impacted Technologies

VendorProductVersion(s)CPE
>= 11.6.1, < 11.6.5.3CPE matchmatch criteria
cpe:2.3:a:f5:big-ip_access_policy_manager:*:*:*:*:*:*:*:*
>= 12.1.0, < 12.1.5.3CPE matchmatch criteria
cpe:2.3:a:f5:big-ip_access_policy_manager:*:*:*:*:*:*:*:*
>= 13.1.0, < 13.1.3.6CPE matchmatch criteria
cpe:2.3:a:f5:big-ip_access_policy_manager:*:*:*:*:*:*:*:*
>= 14.1.0, < 14.1.4CPE matchmatch criteria
cpe:2.3:a:f5:big-ip_access_policy_manager:*:*:*:*:*:*:*:*
>= 15.1.0, < 15.1.2.1CPE matchmatch criteria
cpe:2.3:a:f5:big-ip_access_policy_manager:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

9.9CRITICAL

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
CHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
3.1
Impact Score
6.0
CvssVersion
3.1

Exploit Intelligence

EPSS Score
13.67%
Probability of exploitation in next 30 days
EPSS Percentile
96.1%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.1367 is in the 95th percentile among its peer group of 1,124 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 1.0 Bluesky, 0.5 Mastodon, and 1.6 GitHub mentions.

Media Mentions

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

support.f5.com / csp/article/K18132488
Vendor Advisory