CVE-2021-25900

CRITICAL
Published Jan 26, 20215y ago · Modified Jun 17, 20262w ago
9.8 CVSS 3.1
Critical
Find Similar
Published Jan 26, 2021 5y ago
Last Modified Jun 17, 2026 2w ago

Description

An issue was discovered in the smallvec crate before 0.6.14 and 1.x before 1.6.1 for Rust. There is a heap-based buffer overflow in SmallVec::insert_many.

CVSS Details

Base Score
9.8
Exploitability
3.9
Impact
5.9
Vector string
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction None
Scope Unchanged
Confidentiality High
Integrity High
Availability High

Threat Intelligence

No active exploitation signals — not in CISA KEV and no EPSS score yet.

Exploit & Patch Status
Public Exploit Known
Patch Available

Weaknesses 1

CWE-787 Out-of-bounds Write Memory Safety

Affected Products 2

VendorProductVersionRange
servosmallvec*≥0.6.3  –  <0.6.14
servosmallvec*≥1.0.0  –  <1.6.1

References 1

  • rustsec.org https://rustsec.org/advisories/RUSTSEC-2021-0003.html
    ExploitPatchThird Party Advisory

Remediation

  • rustsec.org https://rustsec.org/advisories/RUSTSEC-2021-0003.html
    ExploitPatchThird Party Advisory