Description
PuTTY 0.71 before 0.84 has an assertion failure in ECDSA signature verification.
Affected products
putty: putty
References2
- www.chiark.greenend.org.uk/~sgtatham/putty/wishlist/ecdsa-remot… PatchVendor Advisory
- lists.tartarus.org/pipermail/putty-announce/2026/000042.html Release Notes
Metrics
- CVSS 3.1
-
3.7
LOW
Score source: CNA
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L - EPSS — exploit probability
- 0% percentile: 20 · as of 14 November 2026
- CWE
- CWE-617
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