CVE-2026-48112

7-Zip is a file archiver with a high compression ratio. Versions 9.18 through 26.00 contain a heap out-of-bounds read in 7-Zip Ar handler BSD SYMDEF parser. A 4-byte heap out-of-bounds read exists in the Unix ar archive parser in 7-Zip. When parsing a BSD-style __.SYMDEF symbol table, the ParseLibSymbols function reads a 32-bit namesSize field via Get32 at a position that can equal the buffer size, reading 4 bytes past the end of the heap allocation. This reads uninitialized heap data under the default allocator. Version 26.01 patches the issue.

CVSS v3 6.5 MEDIUM

6.5^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 2.8 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction REQUIRED

Confidentiality Impact HIGH

Integrity Impact NONE

Availability Impact NONE

Scope UNCHANGED

References

Link	Resource
https://securitylab.github.com/advisories/GHSL-2026-115_GHSL-2026-122_7-zip/	Exploit Patch Third Party Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:7-zip:7-zip:*:*:*:*:*:*:*:*

History

08 Jun 2026, 18:00

Type	Values Removed	Values Added
CPE		cpe:2.3:a:7-zip:7-zip::::::::
References	~~() https://securitylab.github.com/advisories/GHSL-2026-115_GHSL-2026-122_7-zip/ -~~	() https://securitylab.github.com/advisories/GHSL-2026-115_GHSL-2026-122_7-zip/ - Exploit, Patch, Third Party Advisory
First Time		7-zip 7-zip 7-zip

05 Jun 2026, 17:16

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-06-05 17:16

Updated : 2026-06-17 10:54

NVD link : CVE-2026-48112

Mitre link : CVE-2026-48112

CVE.ORG link : CVE-2026-48112

JSON object : View

Products Affected

7-zip

7-zip

CWE

CWE-125

Out-of-bounds Read

CWE-190

Integer Overflow or Wraparound

{"id": "CVE-2026-48112", "cveTags": [], "metrics": {"ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-48112", "role": "CISA Coordinator", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "version": "2.0.3", "timestamp": "2026-06-05T19:38:30.375424Z"}}], "cvssMetricV31": [{"type": "Secondary", "source": "security-advisories@github.com", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 6.5, "attackVector": "NETWORK", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N", "integrityImpact": "NONE", "userInteraction": "REQUIRED", "attackComplexity": "LOW", "availabilityImpact": "NONE", "privilegesRequired": "NONE", "confidentialityImpact": "HIGH"}, "impactScore": 3.6, "exploitabilityScore": 2.8}]}, "affected": [{"source": "security-advisories@github.com", "affectedData": [{"vendor": "mcmilk", "product": "7-Zip", "versions": [{"status": "affected", "version": ">= 9.34, < 26.01"}]}]}], "published": "2026-06-05T17:16:49.353", "references": [{"url": "https://securitylab.github.com/advisories/GHSL-2026-115_GHSL-2026-122_7-zip/", "tags": ["Exploit", "Patch", "Third Party Advisory"], "source": "security-advisories@github.com"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Secondary", "source": "security-advisories@github.com", "description": [{"lang": "en", "value": "CWE-125"}, {"lang": "en", "value": "CWE-190"}]}], "descriptions": [{"lang": "en", "value": "7-Zip is a file archiver with a high compression ratio. Versions 9.18 through 26.00 contain a heap out-of-bounds read in 7-Zip Ar handler BSD SYMDEF parser. A 4-byte heap out-of-bounds read exists in the Unix ar archive parser in 7-Zip. When parsing a BSD-style __.SYMDEF symbol table, the ParseLibSymbols function reads a 32-bit namesSize field via Get32 at a position that can equal the buffer size, reading 4 bytes past the end of the heap allocation. This reads uninitialized heap data under the default allocator. Version 26.01 patches the issue."}], "lastModified": "2026-06-17T10:54:52.060", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:7-zip:7-zip:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "E06D6657-3843-4900-BF1C-5B524F7D649C", "versionEndExcluding": "26.01", "versionStartIncluding": "9.34"}], "operator": "OR"}]}], "sourceIdentifier": "security-advisories@github.com"}