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CVE-2015-5516

20
FAUCET Score

CVE-2015-5516 describes a memory leak vulnerability in the last hop kernel module affecting various F5 BIG-IP products, including LTM, GTM, Link Controller, AAM, AFM, PEM, Analytics, APM, ASM, Edge Gateway, WebAccelerator, WOM, PSM, Enterprise Manager, and BIG-IQ solutions across multiple versions. This flaw allows remote attackers to trigger a denial of service by sending a large volume of crafted UDP packets, leading to excessive memory consumption. With a CVSS v3 score of 7.5 (HIGH), the vulnerability is easily exploitable over the network without requiring user interaction or elevated privileges, resulting in high availability impact. There is currently no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
4.5.0CPE matchmatch criteria
cpe:2.3:a:f5:big-iq_application_delivery_controller:4.5.0:*:*:*:*:*:*:*
10.0.0CPE matchmatch criteria
cpe:2.3:a:f5:big-ip_local_traffic_manager:10.0.0:*:*:*:*:*:*:*
10.0.1CPE matchmatch criteria
cpe:2.3:a:f5:big-ip_local_traffic_manager:10.0.1:*:*:*:*:*:*:*
10.1.0CPE matchmatch criteria
cpe:2.3:a:f5:big-ip_local_traffic_manager:10.1.0:*:*:*:*:*:*:*
10.2.0CPE matchmatch criteria
cpe:2.3:a:f5:big-ip_local_traffic_manager:10.2.0:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

7.5HIGH

CVSS:3.0/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
3.0

Exploit Intelligence

EPSS Score
2.89%
Probability of exploitation in next 30 days
EPSS Percentile
85.5%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0289 is in the 74th percentile among its peer group of 51,551 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 / kb/en-us/solutions/public/k/00/sol00032124.html
Vendor Advisory
securitytracker.com / id/1034686
securitytracker.com / id/1034687