CVE-2021-28877

7.5 highEPSS 1.4%

High (7.5) in rust-lang rust. EPSS 1.4% chance of exploitation in the next 30 days.

In the standard library in Rust before 1.51.0, the Zip implementation calls __iterator_get_unchecked() for the same index more than once when nested. This bug can lead to a memory safety violation due to an unmet safety requirement for the TrustedRandomAccess trait.

Severity

CVSS 3.1

7.5 high

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

EPSS: 1.4% chance of exploitation in the next 30 days; higher than 72% of CVEs (scores of 2026-10-31)
CWE: CWE-119
Published: 2021-04-11
Modified: 2026-06-17
Record from: the NVD, synced 2026-10-19

Affected

rust-lang:rust

References

https://github.com/rust-lang/rust/pull/80670
https://security.gentoo.org/glsa/202210-09
https://github.com/rust-lang/rust/pull/80670
https://security.gentoo.org/glsa/202210-09

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