CVE-2021-28878

PoC —

CVSS 3.1

7.5 high

EPSS

2%p80

Published

Apr 11, 2021 (Apr 11, 2021)

Modified

Jun 17, 2026

Description

In the standard library in Rust before 1.52.0, the Zip implementation calls __iterator_get_unchecked() more than once for the same index (under certain conditions) when next_back() and next() are used together. This bug could lead to a memory safety violation due to an unmet safety requirement for the TrustedRandomAccess trait.

Vendors: rust-lang fedoraproject
Products: rust, fedora
Weakness: CWE-119
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

NVD CVE.org GitHub PoCs EPSS (2.0%)

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