CVE-2002-1563

CVE-2002-1563 is a low-severity vulnerability in Stunnel with a CVSS 2.0 base score of 1.2. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Description

stunnel 4.0.3 and earlier allows attackers to cause a denial of service (crash) via SIGCHLD signal handler race conditions that cause an inconsistency in the child counter.

Frequently asked questions

What is CVE-2002-1563?
stunnel 4.0.3 and earlier allows attackers to cause a denial of service (crash) via SIGCHLD signal handler race conditions that cause an inconsistency in the child counter.
How severe is CVE-2002-1563?
CVE-2002-1563 has a CVSS 2.0 base score of 1.2, rated low severity.
Is CVE-2002-1563 being actively exploited?
It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (26th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2002-1563?
CVE-2002-1563 affects Stunnel. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2002-1563?
Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2002-1563 published?
CVE-2002-1563 was published on 2003-05-12 and last updated on 2026-06-16.

References

Affected products (1)

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