DEBIAN-CVE-2026-4115: putty security update

DEBIAN-CVE-2026-4115, released March 22, 2026, fixes 1 CVE in putty (version 0.84-1). None of them is reported as exploited. Patch Radar priority: Routine.

Routine

CVEs closed

None rated Critical

Exploited

None reported

Highest CVSS

2.9

Base score, 0 to 10

Highest EPSS

0.0057

47th percentile

Fixed package versions

Product	Release	Fixed in
putty	Debian 14	0.84-1

CVEs this fix closes

Priority	CVE	Title	CVSS	EPSS	Exploitation
Routine	CVE-2026-4115	PuTTY Ed25519 Signature ecc-ssh.c eddsa_verify signature verification	2.9	0.0057	None reported

Also fixes CVE-2026-4115

PuTTY 0.85.0.0
PuTTY

Vendor advisory

https://security-tracker.debian.org/tracker/CVE-2026-4115

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