Is CVE-2026-44597 in the CISA KEV catalog?

No. CVE-2026-44597 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2026-44597?

CVE-2026-44597 has a CVSS v3 base score of 3.7 (LOW).

What is the EPSS score for CVE-2026-44597?

CVE-2026-44597 has an EPSS score of 0.45% (36th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2026-44597?

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

CVE & CISA-KEV Catalog

CVE-2026-44597

LOW

3.7

CVSS v3

NVD

Description

Tor before 0.4.9.7 has an out-of-bounds read when an END, a TRUNCATE, or a TRUNCATED cell lacks a reason in its payload, aka TROVE-2026-011.

CWE-684

How to fix

Remediation Available

torDebian

Fixed in:0.4.9.8-0+deb12u1CVE-2026-44597

Fixed in:0.4.9.8-0+deb13u1CVE-2026-44597

Fixed in:0.4.9.8-1CVE-2026-44597

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

0.45%probability of exploitation in 30 days

36thpercentile

Low risk: more likely to be exploited than 36% of all known CVEs.

References

Patch1

gitlab.torproject.org

Third-Party Advisory1

openwall.com

Release Notes1

forum.torproject.org

Other references1

gitlab.torproject.org

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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 2026-05-07.