How severe is CVE-2020-28407?

CVE-2020-28407 has a CVSS 3.x base score of 7.1, rated high severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity high, and availability high.

Is CVE-2020-28407 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (20th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-28407?

CVE-2020-28407 primarily affects Swtpm Project Swtpm. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2020-28407?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2020-28407 published?

CVE-2020-28407 was published on 2023-11-03 and last updated on 2026-06-17.

CVE-2020-28407

CVE-2020-28407 is a high-severity vulnerability in Swtpm Project Swtpm with a CVSS 3.x base score of 7.1. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-59.

Key facts

Severity: High (CVSS 3.x base score 7.1)
EPSS exploit prediction: 0% (20th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-59
Affected product: Swtpm Project Swtpm
Published: 2023-11-03
Last modified: 2026-06-17

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.

Frequently asked questions

What is CVE-2020-28407?: 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.
How severe is CVE-2020-28407?: CVE-2020-28407 has a CVSS 3.x base score of 7.1, rated high severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity high, and availability high.
Is CVE-2020-28407 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (20th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-28407?: CVE-2020-28407 primarily affects Swtpm Project Swtpm. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2020-28407?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2020-28407 published?: CVE-2020-28407 was published on 2023-11-03 and last updated on 2026-06-17.

References

Affected products (2)

cpe:2.3:a:swtpm_project:swtpm:*:*:*:*:*:*:*:*
cpe:2.3:a:swtpm_project:swtpm:0.5.0:*:*:*:*:*:*:*

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