CVE-2021-26951

Severity: critical (CVSS 9.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 1.7% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2021-02-09 · updated 2026-06-17
Weakness: CWE-787

Description

An issue was discovered in the calamine crate before 0.17.0 for Rust. It allows attackers to overwrite heap-memory locations because Vec::set_len is used without proper memory claiming, and this uninitialized memory is used for a user-provided Read operation, as demonstrated by Sectors::get.

Affected products

Calamine Project Calamine: before 0.17.0 — fixed in 0.17.0

How to fix

Upgrade to a fixed version: Calamine Project Calamine 0.17.0. Check the vendor advisory for mitigations.

References

https://rustsec.org/advisories/RUSTSEC-2021-0015.html
https://rustsec.org/advisories/RUSTSEC-2021-0015.html

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