CVE-2009-0938

CVE-2009-0938 is a medium-severity vulnerability in Tor with a CVSS 2.0 base score of 5.0. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Description

Unspecified vulnerability in Tor before 0.2.0.34 allows directory mirrors to cause a denial of service (exit node crash) via "malformed input."

Frequently asked questions

What is CVE-2009-0938?
Unspecified vulnerability in Tor before 0.2.0.34 allows directory mirrors to cause a denial of service (exit node crash) via "malformed input."
How severe is CVE-2009-0938?
CVE-2009-0938 has a CVSS 2.0 base score of 5.0, rated medium severity.
Is CVE-2009-0938 being actively exploited?
It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (77th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2009-0938?
CVE-2009-0938 primarily affects Tor. In total, 30 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2009-0938?
Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2009-0938 published?
CVE-2009-0938 was published on 2009-03-18 and last updated on 2026-06-16.

References

Affected products (30)

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