CVE-2026-48850

MEDIUM EPSS 23.7%
Published May 25, 20261mo ago · Modified Jun 17, 20262w ago
5.9 CVSS 3.1
Medium
Find Similar
Published May 25, 2026 1mo ago
Last Modified Jun 17, 2026 2w ago

Description

PuTTY 0.72 before 0.84 has a double free in RSA KEX.

CVSS Details

Base Score
5.9
Exploitability
2.2
Impact
3.6
Vector string
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack Vector Network
Attack Complexity High
Privileges Required None
User Interaction None
Scope Unchanged
Confidentiality None
Integrity None
Availability High

Threat Intelligence

EPSS Exploit Probability
23.7% percentile
Exploit & Patch Status
No Known Exploit
Patch Available

Weaknesses 1

CWE-415

Affected Products 1

VendorProductVersionRange
puttyputty*≥0.72  –  <0.84

References 2

  • lists.tartarus.org https://lists.tartarus.org/pipermail/putty-announce/2026/000042.html
    Release Notes
  • chiark.greenend.org.uk https://www.chiark.greenend.org.uk/~sgtatham/putty/wishlist/rsakex-double-free.html
    PatchVendor Advisory

Remediation

  • chiark.greenend.org.uk https://www.chiark.greenend.org.uk/~sgtatham/putty/wishlist/rsakex-double-free.html
    PatchVendor Advisory