CVE-2021-28877
HIGH
7.5
CVSS Score
Published: April 11, 2021 at 12:00 AM UTC
Updated: June 17, 2026 at 03:47 AM UTC
1 product affected across 1 vendorRust
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Severity
HIGH7.5
Exploit prediction
EPSS 1%
Description
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.
Affected
Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.
v < 1.51.0
Affected range stops below 1.51.0, so it looks safe — our inference, not a vendor statement
Remediation
No guide yetNo remediation guidance has been written for this CVE yet. What the record does show:
Patch and advisory references
References (2)
Issue TrackingPatchThird Party Advisory
Source: [email protected]
https://github.com/rust-lang/rust/pull/80670Vendor AdvisoryThird Party Advisory
Source: [email protected]
https://security.gentoo.org/glsa/202210-09CVSS
- Attack Vector
- NETWORK
- Complexity
- LOW
- Privileges
- NONE
- User Interaction
- NONE
- Scope
- UNCHANGED
- Confidentiality
- NONE
- Integrity
- NONE
- Availability
- HIGH
Vector?
Quick Info
StatusMODIFIED
CWE
CWE-119
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