PuTTY 0.77 before 0.84 uses a copy of the PuTTY icon as a trust indication for TELNET data but the trust status is not cleared between proxy authentication and the main session.

Code

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No public source repository is identified for this product.

Timeline

Detection, updates, and resolution for this record.

1. May 25, 2026 · NIST NVD

   Detected

   PuTTY 0.77 before 0.84 uses a copy of the PuTTY icon as a trust indication for TELNET data but the trust status is not cleared between proxy authentication and the main session.

2. Jul 24, 2026 · NIST NVD

   Updated

   PuTTY 0.77 before 0.84 uses a copy of the PuTTY icon as a trust indication for TELNET data but the trust status is not cleared between proxy authentication and the main session.

Affected

• cpe putty/puttyversion unspecified

Sources

• CVE.orgVulnerability recordCVE-2026-48851

  Official CVE identifier

  cve.org
• NIST NVDVulnerability recordCVE-2026-48851

  PuTTY 0.77 before 0.84 uses a copy of the PuTTY icon as a trust indication for TELNET data but the trust status is not cleared between proxy authentication and the main session.

  nvd.nist.gov

References

• Release Notes · lists.tartarus.org
• Patch · chiark.greenend.org.uk