CVE-2021-28032
CRITICAL
9.8
CVSS Score
Published: March 5, 2021 at 08:40 AM UTC
Updated: June 17, 2026 at 03:45 AM UTC
1 product affected across 1 vendorNano Arena
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Severity
CRITICAL9.8
Exploit prediction
EPSS 2%
Description
An issue was discovered in the nano_arena crate before 0.5.2 for Rust. There is an aliasing violation in split_at because two mutable references can exist for the same element, if Borrow<Idx> behaves in certain ways. This can have a resultant out-of-bounds write or use-after-free.
Affected
Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.
95%
v < 0.5.2
Affected range stops below 0.5.2, 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 (1)
x_refsource_MISCExploitPatchThird Party Advisory
Source: [email protected]
https://rustsec.org/advisories/RUSTSEC-2021-0031.htmlCVSS
- Attack Vector
- NETWORK
- Complexity
- LOW
- Privileges
- NONE
- User Interaction
- NONE
- Scope
- UNCHANGED
- Confidentiality
- HIGH
- Integrity
- HIGH
- Availability
- HIGH
Vector?
Quick Info
StatusMODIFIED
CWE
NVD-CWE-Other
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