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CVE-2015-7759

17
FAUCET Score

CVE-2015-7759 describes a denial-of-service vulnerability affecting various F5 BIG-IP products, including LTM, APM, and ASM, specifically versions 12.0.0 before HF1. The flaw occurs when a virtual server's TCP profile has "Congestion Metrics Cache" enabled, allowing remote attackers to trigger a Traffic Management Microkernel (TMM) restart via crafted ICMP packets related to Path MTU discovery. This vulnerability has a low CVSS score of 3.7, indicating a low severity. It can be exploited remotely with high attack complexity, but only results in a denial of service, meaning no confidentiality, integrity, or availability of data is compromised beyond the TMM restart. There is no evidence of active exploitation, and no public exploit code is available in Metasploit, Nuclei, or ExploitDB. Furthermore, the CVE has received minimal community discussion or media coverage, suggesting a low level of awareness and exploitation interest.

Impacted Technologies

VendorProductVersion(s)CPE
12.0.0CPE matchmatch criteria
cpe:2.3:a:f5:big-ip_analytics:12.0.0:*:*:*:*:*:*:*
12.0.0CPE matchmatch criteria
cpe:2.3:a:f5:big-ip_application_acceleration_manager:12.0.0:*:*:*:*:*:*:*
12.0.0CPE matchmatch criteria
cpe:2.3:a:f5:big-ip_link_controller:12.0.0:*:*:*:*:*:*:*
12.0.0CPE matchmatch criteria
cpe:2.3:a:f5:big-ip_advanced_firewall_manager:12.0.0:*:*:*:*:*:*:*
12.0.0CPE matchmatch criteria
cpe:2.3:a:f5:big-ip_policy_enforcement_manager:12.0.0:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

3.7LOW

CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L

Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
LOW
Exploitability Score
2.2
Impact Score
1.4
CvssVersion
3.0

Exploit Intelligence

EPSS Score
1.52%
Probability of exploitation in next 30 days
EPSS Percentile
71.9%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0152 is in the 59th percentile among its peer group of 1,506 CVEs.

Social Chatter

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

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.0 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 / kb/en-us/solutions/public/k/22/sol22843911.html
Vendor Advisory
securitytracker.com / id/1034627