CVE-2026-48850

PuTTY RSA Key Exchange Double-Free Vulnerability

Published May 25, 2026 CVSS 3.1 · 3.7 Low EPSS < 1% KEV · Not listed
Description
PuTTY 0.72 before 0.84 has a double free in RSA KEX.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
Title PuTTY RSA Key Exchange Double-Free Vulnerability
Type Values Removed Values Added
Description PuTTY 0.72 before 0.84 has a double free in RSA KEX.
First Time appeared Putty
Putty putty
Weaknesses CWE-415
CPEs cpe:2.3:a:putty:putty:*:*:*:*:*:*:*:*
Vendors & Products Putty
Putty putty
References
Metrics cvssV3_1

{'score': 3.7, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
mitre
Published
Updated
May 26, 2026, 12:59 PM
Reserved
May 25, 2026, 8:13 PM
Status
Analyzed
Published
May 25, 2026, 9:16 PM
Modified
Jul 24, 2026, 10:10 AM