CVE-2026-44597
CRITICALCVSS 9.1/10EPSS 0.45%
Last modified
CVE-2026-44597 is a critical-severity vulnerability rated 9.1/10 on the CVSS scale. 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.. EPSS estimates a 0.45% chance of exploitation in the next 30 days.
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.
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Torproject | Tor | < 0.4.9.7 |
References
- https://www.openwall.com/lists/oss-security/2026/05/06/8Mailing List, Third Party Advisory
Timeline
- Published
- Last Modified
- Status
- Analyzed
Frequently Asked Questions
What is CVE-2026-44597?
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.
How severe is CVE-2026-44597?
CVE-2026-44597 has a CVSS score of 9.1/10 (CRITICAL severity). The EPSS model estimates a 0.45% probability of exploitation in the next 30 days.
How do I fix CVE-2026-44597?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.
Are you affected by CVE-2026-44597?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST