zstd-jni before 1.5.7-14 performs 32-bit signed bounds checks on three direct-ByteBuffer frame-size native methods, allowing out-of-bounds memory reads via negative or overflowing offsets. Attackers can supply negative offset values near Integer.MIN_VALUE to read unmapped memory, causing JVM termination or extracting arbitrary frame size data from unintended memory locations.
Advisories

No advisories yet.

Fixes

Solution

No solution given by the vendor.


Workaround

No workaround given by the vendor.

History

Thu, 10 Sep 2026 20:30:00 +0000

Type Values Removed Values Added
First Time appeared Luben
Luben zstd-jni
Vendors & Products Luben
Luben zstd-jni

Thu, 10 Sep 2026 12:15:00 +0000

Type Values Removed Values Added
Weaknesses CWE-125
References
Metrics threat_severity

None

threat_severity

Important


Wed, 09 Sep 2026 17:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'poc', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Wed, 09 Sep 2026 14:45:00 +0000

Type Values Removed Values Added
Description zstd-jni before 1.5.7-14 performs 32-bit signed bounds checks on three direct-ByteBuffer frame-size native methods, allowing out-of-bounds memory reads via negative or overflowing offsets. Attackers can supply negative offset values near Integer.MIN_VALUE to read unmapped memory, causing JVM termination or extracting arbitrary frame size data from unintended memory locations.
Title zstd-jni 1.1.1 through 1.5.7-13 Out-of-Bounds Read via Direct ByteBuffer Frame-Size Methods
Weaknesses CWE-190
References
Metrics cvssV3_1

{'score': 8.2, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H'}

cvssV4_0

{'score': 8.8, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:H/SC:N/SI:N/SA:N'}


Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: VulnCheck

Published:

Updated: 2026-09-09T16:13:14.420Z

Reserved: 2026-09-09T10:32:34.110Z

Link: CVE-2026-87823

cve-icon Vulnrichment

Updated: 2026-09-09T16:12:47.049Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2026-09-09T15:17:27.583

Modified: 2026-09-09T20:16:54.383

Link: CVE-2026-87823

cve-icon Redhat

Severity : Important

Publid Date: 2026-09-09T14:32:43Z

Links: CVE-2026-87823 - Bugzilla

cve-icon OpenCVE Enrichment

Updated: 2026-09-10T20:10:24Z

Weaknesses