User Interface (UI) Misrepresentation of Critical Information Affecting putty package, versions [0.77,0.84)


Severity

Recommended
0.0
low
0
10

CVSS assessment by Snyk's Security Team. Learn more

Threat Intelligence

EPSS
0.22% (13th percentile)

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  • Snyk IDSNYK-UNMANAGED-PUTTY-16875110
  • published26 May 2026
  • disclosed25 May 2026
  • creditUnknown

Introduced: 25 May 2026

CVE-2026-48851  (opens in a new tab)
CWE-451  (opens in a new tab)

How to fix?

Upgrade putty to version 0.84 or higher.

Overview

Affected versions of this package are vulnerable to User Interface (UI) Misrepresentation of Critical Information in the trust indication process. An attacker can mislead users about the trust status of a TELNET session by exploiting the failure to clear the trust indicator between proxy authentication and the main session.

CVSS Base Scores

version 4.0
version 3.1