CVE-2021-39535
An issue was discovered in libxsmm through v1.16.1-93. A NULL pointer dereference exists in JIT...
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.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- Required
What an attacker can affect
- Confidentiality
- None
- Integrity
- None
- Availability
- High
Exploit likelihood
What each source reports
NVD Score used
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.
- Record
CVE-2021-39535- CVSS 3.1
- 6.5 Medium
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H - CVSS 2.0
- 4.3 Medium
AV:N/AC:M/Au:N/C:N/I:N/A:P - Weakness
- CWE-476
- Updated
- 2026-11-02
CVE List No score
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.
- Record
CVE-2021-39535- Updated
- 2026-11-02
EUVDEUVD-2021-25892 No score
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.
- Record
EUVD-2021-25892- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-g9r6-qhfx-9xcc No score
An issue was discovered in libxsmm through v1.16.1-93. A NULL pointer dereference exists in JIT...
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.
- Record
GHSA-g9r6-qhfx-9xcc- Weakness
- CWE-476
- Updated
- 2026-11-02
OSV
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.
- Record
CVE-2021-39535- CVSS 3.1
- 6.5 Medium
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H - Updated
- 2026-11-02
OSVDEBIAN-CVE-2021-39535
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.
- Record
DEBIAN-CVE-2021-39535- CVSS 3.1
- 6.5 Medium
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H - Updated
- 2026-11-02
Affected products
Affected packages
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2021-39535 is a medium vulnerability (CVSS 6.5) in Libxsmm Project Libxsmm, published September 20, 2021. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.86%, the 58th percentile. Fixed in libxsmm 1.17-1.