The pointer-validation logic in util/mem_util.rs in Occlum before 0.26.0 for Intel SGX…
Priority LOW 25CWE-203Published · Updated
Key facts
- Attack vector
- Local
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Information disclosure
- Confidentiality · integrity · availability
- High · None · None
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-203.
Summary
The pointer-validation logic in util/mem_util.rs in Occlum before 0.26.0 for Intel SGX acts as a confused deputy that allows a local attacker to access unauthorized information via side-channel analysis.
Why it matters now
EPSS 0.00436 38th percentileScored 2026-11-07
Public exploit Yes 2 exploit referencesTagged 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:occlum_project:occlum:*:*:*:*:*:software_guard_extensions:*:* | before 0.26.0 | Vulnerable | Occlum Project |
- cpe:2.3:a:occlum_project:occlum:*:*:*:*:*:software_guard_extensions:*:* Versions before 0.26.0 Vulnerable ·Occlum Project
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2021-44421
- 2026-10-03 Alias added: GHSA-pj6m-jc6g-72c4
References
Exploit 2
Sources
- CVE-2021-44421 · CVE Program
- CVE-2021-44421 · NVD
- FIRST EPSS
- GHSA-pj6m-jc6g-72c4 · GitHub Advisory Database · CC BY 4.0
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