In swtpm before 0.4.2 and 0.5.x before 0.5.1, a local attacker may be able to overwrite…
Priority LOW 33CWE-59Published · Updated
Key facts
- Attack vector
- Local
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- None · High · High
- Fix status
- Will not fix Red Hat: no fix planned
Attack profile from CVSS 3.1 · NVD. Fix status from CNA and Red Hat.
Summary
In swtpm before 0.4.2 and 0.5.x before 0.5.1, a local attacker may be able to overwrite arbitrary files via a symlink attack against a temporary file such as TMP2-00.permall.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00279 20th percentileScored 2026-11-07
Fix Will not fix Red Hat: no fix planned
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Total
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
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 · 2
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:swtpm_project:swtpm:*:*:*:*:*:*:*:* | before 0.4.2 | Vulnerable | Swtpm Project |
| cpe:2.3:a:swtpm_project:swtpm:0.5.0:*:*:*:*:*:*:* | 0.5.0 | Vulnerable | Swtpm Project |
- cpe:2.3:a:swtpm_project:swtpm:*:*:*:*:*:*:*:* Versions before 0.4.2 Vulnerable ·Swtpm Project
- cpe:2.3:a:swtpm_project:swtpm:0.5.0:*:*:*:*:*:*:* Versions 0.5.0 Vulnerable ·Swtpm Project
Remediation
No fixed version listed by the sources yet.
Vendor assessments
Red Hat
Red Hat rating: Moderate. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat Enterprise Linux 8 Advanced Virtualization | Affected | No fix planned: Will not fix |
Not affected: 2 products
- Red Hat Enterprise Linux 8 Advanced Virtualization
- Red Hat Enterprise Linux 9
Timeline
- 2026-10-02 Threatist record created from CVE-2020-28407
- 2026-10-03 Alias added: GHSA-52x8-2f4w-q8mm
References
More Swtpm Project Swtpm vulnerabilities
- TI-2022-07697 Out-of-bounds read in swtpm CVSS 3.1MEDIUM 6.2
Sources
- CVE-2020-28407 · CVE Program
- CVE-2020-28407 · NVD
- FIRST EPSS
- GHSA-52x8-2f4w-q8mm · GitHub Advisory Database · CC BY 4.0
- CVE-2020-28407 · 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