Reachable Assertion Affecting putty package, versions [0.71,0.84)
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-UNMANAGED-PUTTY-16875108
- published26 May 2026
- disclosed25 May 2026
- creditUnknown
Introduced: 25 May 2026
CVE-2026-48852 (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 Reachable Assertion via the ECDSA signature verification process. An attacker can cause the application to terminate unexpectedly by sending specially crafted ECDSA signatures.