How severe is CVE-2021-41387?

CVE-2021-41387 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2021-41387 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (60th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-41387?

CVE-2021-41387 affects Seatd Project Seatd. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-41387?

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-2021-41387 published?

CVE-2021-41387 was published on 2021-09-17 and last updated on 2026-06-17.

CVE-2021-41387

CVE-2021-41387 is a high-severity vulnerability in Seatd Project Seatd with a CVSS 3.x base score of 8.8. 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-426.

Key facts

Severity: High (CVSS 3.x base score 8.8)
CVSS v2: 8.5
EPSS exploit prediction: 1% (60th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-426
Affected product: Seatd Project Seatd
Published: 2021-09-17
Last modified: 2026-06-17

Description

seatd-launch in seatd 0.6.x before 0.6.2 allows privilege escalation because it uses execlp and may be installed setuid root.

Frequently asked questions

What is CVE-2021-41387?: seatd-launch in seatd 0.6.x before 0.6.2 allows privilege escalation because it uses execlp and may be installed setuid root.
How severe is CVE-2021-41387?: CVE-2021-41387 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2021-41387 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (60th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-41387?: CVE-2021-41387 affects Seatd Project Seatd. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-41387?: 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-2021-41387 published?: CVE-2021-41387 was published on 2021-09-17 and last updated on 2026-06-17.

References

https://lists.sr.ht/~kennylevinsen/seatd-announce/%3CGJ2IZQ.HCKS1J0LSI803%40kl.wtf%3E

Affected products (1)

cpe:2.3:a:seatd_project:seatd:*:*:*:*:*:*:*:*

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