What’s Vulnerable › Vulnerabilities

CVE-2020-28407

• Severity: high (CVSS 7.1 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.3% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2023-11-03 · updated 2026-06-17
• Weakness: CWE-59

Description

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.

Affected products

• Swtpm Project Swtpm: before 0.4.2; 0.5.0 — fixed in 0.4.2

How to fix

Upgrade to a fixed version: Swtpm Project Swtpm 0.4.2. Check the vendor advisory for mitigations.

References

• https://bugzilla.suse.com/show_bug.cgi?id=1198395
• https://github.com/stefanberger/swtpm/releases/tag/v0.4.2
• https://github.com/stefanberger/swtpm/releases/tag/v0.5.1
• https://bugzilla.suse.com/show_bug.cgi?id=1198395
• https://github.com/stefanberger/swtpm/releases/tag/v0.4.2
• https://github.com/stefanberger/swtpm/releases/tag/v0.5.1

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