CVE-2021-28876
In the standard library in Rust before 1.52.0, the Zip implementation has a panic safety issue. It calls __iterator_get_unchecked() more…
- Published
- Updated
- Reserved
- Assigned by
- mitre
Description
In the standard library in Rust before 1.52.0, the Zip implementation has a panic safety issue. It calls __iterator_get_unchecked() more than once for the same index when the underlying iterator panics (in certain conditions). This bug could lead to a memory safety violation due to an unmet safety requirement for the TrustedRandomAccess trait.
Timeline
ID reserved
By mitre
- 23 days later
· 23 days later
Published
- 3 years later
· 3 years later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| NVDNVD · Modified | 3.1 | Medium5.3 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N |
- EPSS (exploitation in 30 days)
- 1.6% · top 25% of all CVEs (7 Nov 2026)
The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 5.3.
Weakness
Affected products
n/a
- affected n/a
References (6)
- https://github.com/rust-lang/rust/issues/81740 (opens in a new tab)x_transferred
- https://github.com/rust-lang/rust/pull/81741 (opens in a new tab)x_transferred
- FEDORA-2021-d0ba1901ca (opens in a new tab)vendor-advisoryx_transferred
- FEDORA-2021-b1ba54add6 (opens in a new tab)vendor-advisoryx_transferred
- FEDORA-2021-d7f74f0250 (opens in a new tab)vendor-advisoryx_transferred
- GLSA-202210-09 (opens in a new tab)vendor-advisoryx_transferred
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://trackcve.app/cve/CVE-2021-28876)Record last updated .