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CVE-2024-26256

71
FAUCET Score

CVE-2024-26256 is a remote code execution vulnerability affecting Libarchive, specifically impacting products from fedoraproject and Microsoft. With a CVSS score of 7.8 (HIGH), it presents a significant risk, allowing an unauthenticated attacker to achieve high confidentiality, integrity, and availability impact through user interaction. While not currently listed in CISA's KEV catalog, its high EPSS and FAUCET Risk Score, along with media coverage from Microsoft's April Patch Tuesday, indicate its potential for exploitation. There is no public exploit code available (Metasploit, Nuclei, ExploitDB), and community discussion is limited.

Impacted Technologies

VendorProductVersion(s)CPE
< 3.7.4CPE matchmatch criteria
cpe:2.3:a:libarchive:libarchive:*:*:*:*:*:*:*:*
39CPE matchmatch criteria
cpe:2.3:o:fedoraproject:fedora:39:*:*:*:*:*:*:*
40CPE matchmatch criteria
cpe:2.3:o:fedoraproject:fedora:40:*:*:*:*:*:*:*
< 10.0.22621.3447CPE matchmatch criteria
cpe:2.3:o:microsoft:windows_11_22h2:*:*:*:*:*:*:*:*
< 10.0.22631.3447CPE matchmatch criteria
cpe:2.3:o:microsoft:windows_11_23h2:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

7.8HIGH

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

Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
1.8
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
87.90%
Probability of exploitation in next 30 days
EPSS Percentile
99.7%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.8790 is in the 100th percentile among its peer group of 11,617 CVEs.

Social Chatter

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

Media Mentions

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 (8)

github_advisorypatch availablevia nvd_reference
View patch
microsoftpatch availablevia msrc
Product: Windows Server 2022, 23H2 Edition (Server Core installation)Fixed in: 10.0.25398.830
View patch
microsoftpatch availablevia msrc
Product: Windows 11 Version 23H2 for ARM64-based SystemsFixed in: 10.0.22631.3447
View patch
microsoftpatch availablevia msrc
Product: Windows 11 Version 23H2 for x64-based SystemsFixed in: 10.0.22631.3447
View patch
microsoftpatch availablevia msrc
Product: Windows 11 Version 22H2 for ARM64-based SystemsFixed in: 10.0.22621.3447
View patch
microsoftpatch availablevia msrc
Product: Windows 11 Version 22H2 for x64-based SystemsFixed in: 10.0.22621.3447
View patch
nodejspatch availablevia llm_extracted
View patch
pjsippatch availablevia llm_extracted
View patch

Vendor Advisories (4)

nodejsllm-nodejs-302528ae26f0d946CRITICAL

HP ThinPro 8.1 SP4 Security Updates

Oct 29, 2024
pjsipllm-pjsip-7ba3ec379210ac70CRITICAL

HP ThinPro 8.1 SP4 Security Updates

Oct 29, 2024
microsoft2024-Apr/CVE-2024-26256Important

Libarchive Remote Code Execution Vulnerability

Apr 9, 2024
redhatCVE-2024-26256Moderate

libarchive: Heap based buffer overflow in rar e8 filter

Apr 9, 2024

References

github.com / LeSuisse/nixpkgs/commit/81b82a2934521dffef76f7ca305d8d4e22fe7262
Patch
github.com / libarchive/libarchive/commit/eb7939b24a681a04648a59cdebd386b1e9dc9237.patch
Patch
github.com / libarchive/libarchive/releases/tag/v3.7.4
Release Notes
lists.fedoraproject.org / archives/list/[email protected]/message/EWANFZ6NEMXFCALXWI2AFKYBOLONAVFC
Mailing List
lists.fedoraproject.org / archives/list/[email protected]/message/TWAMR5TY47UKVYMWQXB34CWSBNTRYMBV
Mailing List
openwall.com / lists/oss-security/2024/06/04/2
Mailing List
openwall.com / lists/oss-security/2024/06/04/2
Mailing List
openwall.com / lists/oss-security/2024/06/05/1
Mailing List
msrc.microsoft.com / update-guide/vulnerability/CVE-2024-26256
Third Party Advisory