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CVE-2018-10887

25
FAUCET Score

CVE-2018-10887 is a high-severity vulnerability in libgit2 versions prior to 0.27.3, affecting Debian and other products utilizing the library. An unexpected sign extension in the git_delta_apply function can lead to an integer overflow and an out-of-bounds read, potentially allowing an attacker to leak memory addresses or cause a Denial of Service. With a CVSS score of 8.1, it has a low attack complexity and requires user interaction, but can result in high confidentiality and availability impacts. There is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this vulnerability.

Impacted Technologies

VendorProductVersion(s)CPE
< 0.27.3CPE matchmatch criteria
cpe:2.3:a:libgit2:libgit2:*:*:*:*:*:*:*:*
8.0CPE matchmatch criteria
cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*
9.0CPE matchmatch criteria
cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

8.1HIGH

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
2.8
Impact Score
5.2
CvssVersion
3.1

Exploit Intelligence

EPSS Score
2.05%
Probability of exploitation in next 30 days
EPSS Percentile
79.2%
Percentile rank of EPSS score among Peer Group
As of 2026-07-25
Model: v2026.06.15
This CVE's current EPSS score of 0.0205 is in the 78th percentile among its peer group of 14,825 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.2 Bluesky, 0.1 Mastodon, and 0.2 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 0.1 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (2)

github_advisorypatch availablevia nvd_reference
View patch
redhatpatch availablevia nvd_reference
View patch

References

bugzilla.redhat.com / show_bug.cgi
Issue TrackingPatch
github.com / libgit2/libgit2/commit/3f461902dc1072acb8b7607ee65d0a0458ffac2a
Patch
github.com / libgit2/libgit2/commit/c1577110467b701dcbcf9439ac225ea851b47d22
Patch
github.com / libgit2/libgit2/releases/tag/v0.27.3
PatchRelease Notes
lists.debian.org / debian-lts-announce/2018/08/msg00024.html
Mailing ListThird Party Advisory
lists.debian.org / debian-lts-announce/2022/03/msg00031.html
Mailing ListThird Party Advisory