Is CVE-2026-44601 in the CISA KEV catalog?

No. CVE-2026-44601 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2026-44601?

CVE-2026-44601 has a CVSS v3 base score of 3.7 (LOW).

What is the EPSS score for CVE-2026-44601?

CVE-2026-44601 has an EPSS score of 0.34% (26th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2026-44601?

Upgrade tor on debian 12 to 0.4.9.8-0+deb12u1 or later.

CVE & CISA-KEV Catalog

CVE-2026-44601

LOW

3.7

CVSS v3

NVD

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.

CWE-837

How to fix

Remediation Available

torDebian

Fixed in:0.4.9.8-0+deb12u1CVE-2026-44601

Fixed in:0.4.9.8-0+deb13u1CVE-2026-44601

Fixed in:0.4.9.8-1CVE-2026-44601

TridentStack Control can deploy fixes like this automatically across your Windows, macOS, and Linux fleet. See how it works

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityHigh

Privileges RequiredNone

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityNone

IntegrityNone

AvailabilityLow

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L

Exploit Intelligence

0.34%probability of exploitation in 30 days

26thpercentile

Low risk: more likely to be exploited than 26% of all known CVEs.

References

Patch1

gitlab.torproject.org

Mailing List1

openwall.com

Release Notes1

forum.torproject.org

Other references1

gitlab.torproject.org

Related Vulnerabilities

Other CWE-837 vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2024-11716	Unscored	-	12%	-	-
CVE-2023-6759	Medium	5.3	1.0%	-	-
CVE-2024-4629	Medium	6.5	0.8%	-	Fix
CVE-2023-6438	Medium	4.3	0.7%	-	-
CVE-2024-11717	Unscored	-	0.6%	-	-
CVE-2023-6467	Low	3.1	0.6%	-	-

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-05-08.