An issue was discovered in libxsmm through v1.16.1-93.
Priority LOW 30CWE-476Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- Required
- Attack complexity
- Low
- Impact type
- Denial of service
- Confidentiality · integrity · availability
- None · None · High
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-476.
Summary
An issue was discovered in libxsmm through v1.16.1-93. A NULL pointer dereference exists in JIT code. It allows an attacker to cause Denial of Service.
Why it matters now
EPSS 0.00857 58th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix No fix listed No fixed version in the sources yet
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:libxsmm_project:libxsmm:*:*:*:*:*:*:*:* | up to 1.16.1 | Vulnerable | Libxsmm Project |
- cpe:2.3:a:libxsmm_project:libxsmm:*:*:*:*:*:*:*:* Versions up to 1.16.1 Vulnerable ·Libxsmm Project
Remediation
No fixed version listed by the sources yet.
Vendor assessments
Timeline
- 2026-10-02 Threatist record created from CVE-2021-39535
- 2026-10-03 Alias added: GHSA-g9r6-qhfx-9xcc
References
More Libxsmm Project Libxsmm vulnerabilities
- TI-2018-14567 There is a heap-based buffer-overflow at generator_spgemm_csc_reader.c (function… CVSS 3.0HIGH 8.8
- TI-2018-14566 There is a heap-based buffer overflow in libxsmm_sparse_csc_reader at… CVSS 3.0HIGH 8.8
- TI-2021-16801 An issue was discovered in libxsmm through v1.16.1-93. CVSS 3.1HIGH 8.8
- TI-2018-14568 There is an attempted excessive memory allocation at libxsmm_sparse_csc_reader in… CVSS 3.0MEDIUM 6.5
Sources
- CVE-2021-39535 · CVE Program
- CVE-2021-39535 · NVD
- FIRST EPSS
- GHSA-g9r6-qhfx-9xcc · GitHub Advisory Database · CC BY 4.0
- CVE-2021-39535 · Red Hat security data · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences