How severe is CVE-2026-44601?

CVE-2026-44601 has a CVSS 3.x base score of 3.7, rated low severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability low.

Is CVE-2026-44601 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-2026-44601?

CVE-2026-44601 affects Torproject Tor. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-44601?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2026-44601 have an EU (EUVD) identifier?

Yes. CVE-2026-44601 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-28302.

When was CVE-2026-44601 published?

CVE-2026-44601 was published on 2026-05-07 and last updated on 2026-06-17.

CVE-2026-44601

CVE-2026-44601 is a low-severity vulnerability in Torproject Tor with a CVSS 3.x base score of 3.7. 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-837.

Key facts

Severity: Low (CVSS 3.x base score 3.7)
EPSS exploit prediction: 0% (26th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-28302
Weakness: CWE-837
Affected product: Torproject Tor
Published: 2026-05-07
Last modified: 2026-06-17

Description

Tor before 0.4.9.7, when circuit queue memory pressure exists, can experience a client crash because of a double close of a circuit, aka TROVE-2026-009.

Frequently asked questions

What is CVE-2026-44601?: Tor before 0.4.9.7, when circuit queue memory pressure exists, can experience a client crash because of a double close of a circuit, aka TROVE-2026-009.
How severe is CVE-2026-44601?: CVE-2026-44601 has a CVSS 3.x base score of 3.7, rated low severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability low.
Is CVE-2026-44601 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-2026-44601?: CVE-2026-44601 affects Torproject Tor. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-44601?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2026-44601 have an EU (EUVD) identifier?: Yes. CVE-2026-44601 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-28302.
When was CVE-2026-44601 published?: CVE-2026-44601 was published on 2026-05-07 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:torproject:tor:*:*:*:*:*:*:*:*

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