CVE-2021-24115

CRITICAL
Published Feb 22, 20215y ago · Modified Jun 17, 20262w ago
9.8 CVSS 3.1
Critical
Find Similar
Published Feb 22, 2021 5y ago
Last Modified Jun 17, 2026 2w ago

Description

In Botan before 2.17.3, constant-time computations are not used for certain decoding and encoding operations (base32, base58, base64, and hex).

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
No Known Exploit
Patch Available

Affected Products 1

VendorProductVersionRange
botan_projectbotan* <2.17.3

References 3

  • botan.randombit.net https://botan.randombit.net/news.html
    Release NotesVendor Advisory
  • github.com https://github.com/randombit/botan/compare/2.17.2...2.17.3
    PatchThird Party Advisory
  • github.com https://github.com/randombit/botan/pull/2549
    PatchThird Party Advisory

Remediation

  • github.com https://github.com/randombit/botan/compare/2.17.2...2.17.3
    PatchThird Party Advisory
  • github.com https://github.com/randombit/botan/pull/2549
    PatchThird Party Advisory