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CVE-2020-5949

19
FAUCET Score

CVE-2020-5949 describes a denial-of-service vulnerability affecting F5 BIG-IP versions 14.0.0-14.0.1 and 13.1.0-13.1.3.4. Specifically, a virtual server configured with an FTP profile can have its FTP channel disrupted by certain traffic patterns. This vulnerability carries a CVSSv3 score of 7.5 (High), indicating it can be exploited remotely with low complexity to achieve high availability impact, without requiring user interaction or privileges. There is currently no evidence of active exploitation, public exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
>= 13.1.0, < 13.1.3.5CPE matchmatch criteria
cpe:2.3:a:f5:big-ip_access_policy_manager:*:*:*:*:*:*:*:*
>= 13.1.0, < 13.1.3.5CPE matchmatch criteria
cpe:2.3:a:f5:big-ip_advanced_firewall_manager:*:*:*:*:*:*:*:*
>= 13.1.0, < 13.1.3.5CPE matchmatch criteria
cpe:2.3:a:f5:big-ip_advanced_web_application_firewall:*:*:*:*:*:*:*:*
>= 13.1.0, < 13.1.3.5CPE matchmatch criteria
cpe:2.3:a:f5:big-ip_analytics:*:*:*:*:*:*:*:*
>= 13.1.0, < 13.1.3.5CPE matchmatch criteria
cpe:2.3:a:f5:big-ip_application_acceleration_manager:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

7.5HIGH

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
3.6
CvssVersion
3.1

Exploit Intelligence

EPSS Score
1.03%
Probability of exploitation in next 30 days
EPSS Percentile
60.2%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0103 is in the 37th percentile among its peer group of 51,553 CVEs.

Social Chatter

No social media mentions found for this CVE.

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 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/K20984059
Vendor Advisory