Is CVE-2026-6654 in the CISA KEV catalog?

No. CVE-2026-6654 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2026-6654?

CVE-2026-6654 has a CVSS v3 base score of 5.1 (MEDIUM).

What is the EPSS score for CVE-2026-6654?

CVE-2026-6654 has an EPSS score of 0.17% (6th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2026-6654?

Upgrade rust-thin-vec on debian unstable to 0.2.17-1 or later.

CVE & CISA-KEV Catalog

CVE-2026-6654

MEDIUM

5.1

CVSS v3

NVD

Description

Double-Free / Use-After-Free (UAF) in the `IntoIter::drop` and `ThinVec::clear` functions in the thin_vec crate. A panic in `ptr::drop_in_place` skips setting the length to zero.

CWE-415 CWE-416Use After Free CWE-1341

How to fix

Remediation Available

rust-thin-vecDebian

Fixed in:0.2.17-1CVE-2026-6654

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 VectorLocal

Attack ComplexityLow

Privileges RequiredNone

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityLow

IntegrityLow

AvailabilityNone

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

Exploit Intelligence

0.17%probability of exploitation in 30 days

6thpercentile

Low risk: more likely to be exploited than 6% of all known CVEs.

References

Exploit1

github.com

Other references3

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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 2026-06-30.