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Multiple Vulnerabilities in 7-Zip

Indian – Computer Emergency Response Team (https://www.cert-in.org.in)

Severity Rating: HIGH

Software Affected

7-Zip versions prior to 26.01

Overview

Multiple vulnerabilities have been reported in 7-Zip, which could be exploited by an attacker to disclose sensitive information, cause denial of service conditions, perform arbitrary file write operations, and execute arbitrary code on the targeted system.

Target Audience:

All end-user organizations and individuals using affected versions of 7-Zip.

Risk Assessment:

High risk of sensitive information disclosure, arbitrary file write, arbitrary code execution, denial of service, and application crashes.

 

Impact Assessment:

Potential for unauthorized access to sensitive information, arbitrary file modification, arbitrary code execution, full system compromise and service disruption.

Description

7-Zip is an open-source file archiver utility used for creating, managing, and extracting compressed archives across various formats.

These vulnerabilities exist in 7-Zip due to improper handling of memory operations, insufficient bounds validation, use of uninitialized memory, integer overflow conditions, and inadequate path validation in multiple archive handlers and extraction routines.

Successful exploitation of these vulnerabilities could allow an attacker to disclose sensitive information, cause denial of service conditions, perform arbitrary file write operations, and execute arbitrary code on the targeted system.

Solution

Update to version 26.01 or later of 7-Zip

Vendor Information

7-Zip

https://7-zip.org/

References

 

https://securitylab.github.com/advisories/GHSL-2026-115_GHSL-2026-122_7-zip/

https://securitylab.github.com/advisories/GHSL-2026-140_7-Zip/

CVE Name

CVE-2026-48092

CVE-2026-48101

CVE-2026-48102

CVE-2026-48103

CVE-2026-48104

CVE-2026-48111

CVE-2026-48112

CVE-2026-48095

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Thanks and Regards,

CERT-In

Incident Response Help Desk

e-mail: incident@cert-in.org.in

Phone: +91-11-22902657

Toll Free Number: 1800-11-4949

Toll Free Fax : 1800-11-6969

Web: http://www.cert-in.org.in

PGP Fingerprint: A768 083E 4475 5725 B81A A379 2156 C0C0 B620 D0B4

PGP Key information:

https://www.cert-in.org.in/s2cMainServlet?pageid=CONTACTUS

Postal address:

Indian Computer Emergency Response Team (CERT-In)

Ministry of Electronics and Information Technology

Government of India

Electronics Niketan

6, C.G.O. Complex

New Delhi-110 003

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