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CVE-2015-8787

28
FAUCET Score

CVE-2015-8787 describes a critical denial-of-service vulnerability in the Linux kernel's nf_nat_redirect_ipv4 function, affecting versions prior to 4.4. An unauthenticated remote attacker can exploit this flaw by sending specific IPv4 packets to an incompletely configured interface, leading to a NULL pointer dereference and system crash, with potential for further unspecified impact. This vulnerability carries a CVSS score of 9.8 (Critical) due to its network-based attack vector, low attack complexity, and high impact on availability, integrity, and confidentiality. Despite its severity, there is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
>= 3.19, < 4.1.31CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
>= 4.2, < 4.4CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

9.8CRITICAL

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
9.23%
Probability of exploitation in next 30 days
EPSS Percentile
94.8%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0924 is in the 90th 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

Patch Available

Vendor Patches (1)

github_advisorypatch availablevia nvd_reference
View patch

Vendor Advisories (1)

redhatCVE-2015-8787Moderate

kernel: Missing NULL pointer check in nf_nat_redirect_ipv4

Dec 2, 2015

References

git.kernel.org / cgit/linux/kernel/git/torvalds/linux.git/commit
Issue TrackingPatchVendor Advisory
lists.fedoraproject.org / pipermail/package-announce/2016-February/176464.html
Third Party Advisory
lists.fedoraproject.org / pipermail/package-announce/2016-February/176484.html
Third Party Advisory
lists.opensuse.org / opensuse-security-announce/2016-04/msg00015.html
Third Party Advisory
bugzilla.redhat.com / show_bug.cgi
Issue Tracking
github.com / torvalds/linux/commit/94f9cd81436c85d8c3a318ba92e236ede73752fc
Issue TrackingPatchThird Party Advisory
openwall.com / lists/oss-security/2016/01/27/6
Mailing List
oracle.com / technetwork/topics/security/linuxbulletinjul2016-3090544.html
Third Party Advisory
oracle.com / technetwork/topics/security/ovmbulletinoct2016-3090547.html
Third Party Advisory
ubuntu.com / usn/USN-2889-1
Third Party Advisory
ubuntu.com / usn/USN-2889-2
Third Party Advisory
ubuntu.com / usn/USN-2890-1
Third Party Advisory
ubuntu.com / usn/USN-2890-2
Third Party Advisory
ubuntu.com / usn/USN-2890-3
Third Party Advisory