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CVE-2020-5885

22
FAUCET Score

CVE-2020-5885 describes a critical vulnerability in F5 BIG-IP systems, specifically versions 15.0.0-15.1.0.1, 14.1.0-14.1.2.3, 13.1.0-13.1.3.3, and 12.1.0-12.1.5.1, when configured for connection mirroring in a high availability (HA) pair. The flaw allows sensitive cryptographic objects to be transmitted over an insecure control plane channel, exposing them to potential interception. With a CVSS score of 9.1 (Critical), this vulnerability has a network attack vector with low complexity, requiring no user interaction, and could lead to high confidentiality and integrity impacts. There is no evidence of active exploitation, publicly available exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
>= 12.1.0, <= 12.1.5.1CPE matchmatch criteria
cpe:2.3:a:f5:big-ip_access_policy_manager:*:*:*:*:*:*:*:*
>= 13.1.0, <= 13.1.3.3CPE matchmatch criteria
cpe:2.3:a:f5:big-ip_access_policy_manager:*:*:*:*:*:*:*:*
>= 14.1.0, <= 14.1.2.3CPE matchmatch criteria
cpe:2.3:a:f5:big-ip_access_policy_manager:*:*:*:*:*:*:*:*
>= 15.0.0, <= 15.1.0.1CPE matchmatch criteria
cpe:2.3:a:f5:big-ip_access_policy_manager:*:*:*:*:*:*:*:*
>= 12.1.0, <= 12.1.5.1CPE matchmatch criteria
cpe:2.3:a:f5:big-ip_advanced_firewall_manager:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

9.1CRITICAL

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
NONE
Exploitability Score
3.9
Impact Score
5.2
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.81%
Probability of exploitation in next 30 days
EPSS Percentile
53.1%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0081 is in the 37th percentile among its peer group of 36,897 CVEs.

Social Chatter

No social media mentions found for this CVE.

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

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/K17663061
Vendor Advisory