Is CVE-2026-44603 in the CISA KEV catalog?

No. CVE-2026-44603 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2026-44603?

CVE-2026-44603 has a CVSS v3 base score of 3.7 (LOW).

What is the EPSS score for CVE-2026-44603?

CVE-2026-44603 has an EPSS score of 0.34% (26th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2026-44603?

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

CVE & CISA-KEV Catalog

CVE-2026-44603

LOW

3.7

CVSS v3

NVD

Description

Tor before 0.4.9.7 has an out-of-bounds read by one byte via a malformed BEGIN cell, aka TROVE-2026-007.

CWE-193

How to fix

Remediation Available

torDebian

Fixed in:0.4.9.8-0+deb12u1CVE-2026-44603

Fixed in:0.4.9.8-0+deb13u1CVE-2026-44603

Fixed in:0.4.9.8-1CVE-2026-44603

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

Third-Party Advisory1

openwall.com

Release Notes1

forum.torproject.org

Other references1

gitlab.torproject.org

Embed a live status badge for CVE-2026-44603

Markdown

[![CVE-2026-44603](https://tridentstack.com/cve/badge/CVE-2026-44603.svg)](https://tridentstack.com/cve/CVE-2026-44603)

HTML

<a href="https://tridentstack.com/cve/CVE-2026-44603"><img src="https://tridentstack.com/cve/badge/CVE-2026-44603.svg" alt="CVE-2026-44603"></a>

Find and fix vulnerabilities across your fleet

TridentStack Control continuously scans your Windows, macOS, and Linux fleet for known vulnerabilities, prioritizes them by severity and active exploitation, and patches them automatically.

Start free

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.