CVE-2026-48851

Description

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.

CVSS Vector

References

• https://lists.tartarus.org/pipermail/putty-announce/2026/000042.html
• https://www.chiark.greenend.org.uk/~sgtatham/putty/wishlist/telnet-trust-sigil.html