How severe is CVE-2026-44597?

CVE-2026-44597 has a CVSS 3.x base score of 3.7, rated low severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability low.

Is CVE-2026-44597 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (36th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-44597?

CVE-2026-44597 affects Torproject Tor. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-44597?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2026-44597 have an EU (EUVD) identifier?

Yes. CVE-2026-44597 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-28231.

When was CVE-2026-44597 published?

CVE-2026-44597 was published on 2026-05-07 and last updated on 2026-06-17.

CVE-2026-44597

CVE-2026-44597 is a low-severity vulnerability in Torproject Tor with a CVSS 3.x base score of 3.7. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-684.

Key facts

Severity: Low (CVSS 3.x base score 3.7)
EPSS exploit prediction: 0% (36th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-28231
Weakness: CWE-684
Affected product: Torproject Tor
Published: 2026-05-07
Last modified: 2026-06-17

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.

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 3.x base score of 3.7, rated low severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability low.
Is CVE-2026-44597 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (36th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-44597?: CVE-2026-44597 affects Torproject Tor. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-44597?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2026-44597 have an EU (EUVD) identifier?: Yes. CVE-2026-44597 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-28231.
When was CVE-2026-44597 published?: CVE-2026-44597 was published on 2026-05-07 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:torproject:tor:*:*:*:*:*:*:*:*

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