CVE-2026-44601

LOW
Published May 7, 2026 Modified May 8, 2026 CWE-837

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.

CVSS v3.1 Score

3.7
LOW
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L

EPSS — Exploit Prediction

0.0006
Probability of exploitation
0.17%
Percentile rank

EPSS estimates the probability that this vulnerability will be exploited in the wild within the next 30 days. A higher score means more likely to be exploited.

Weakness Type (CWE)

CWE-837 CWE-837

Affected Products

Vendor Product
torproject tor

References

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. It has a CVSS v3.1 base score of 3.7 (LOW).
How severe is CVE-2026-44601? +
CVE-2026-44601 has a CVSS v3.1 score of 3.7 out of 10, rated LOW. This is a low-severity vulnerability with limited impact. The EPSS score is 0.0006, placing it in the 0th percentile for exploitation probability.
What products are affected by CVE-2026-44601? +
CVE-2026-44601 affects products from torproject, specifically: tor. Check the affected products table above for specific version ranges.
How do I check if I'm vulnerable to CVE-2026-44601? +
You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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