# PuTTY 0.85.0.0

PuTTY 0.85.0.0, released August 14, 2026, fixes 4 CVEs in PuTTY. None of them is reported as exploited. Patch Radar priority: Routine.

- Web page: https://patchblox.com/security/fix/windows-app/putty.putty-0.85.0.0
- Platform: Windows apps
- Released: Aug 14, 2026
- Priority: Routine (Closes 4 CVEs, none high severity)
- CVEs: 4, exploited: 0, on CISA KEV: 0

## Applies to

| Product | Release | Fixed in |
|---|---|---|
| [PuTTY](https://patchblox.com/security/data/product/windows-app/putty.md) |  | 0.85.0.0 |

## CVEs this fix closes

| CVE | Priority | Title | CVSS | EPSS | Exploitation |
|---|---|---|---:|---:|---|
| [CVE-2026-4115](https://patchblox.com/security/data/cve/CVE-2026-4115.md) | Routine | PuTTY Ed25519 Signature ecc-ssh.c eddsa_verify signature verification | 2.9 | 0.0057 |  |
| [CVE-2026-48850](https://patchblox.com/security/data/cve/CVE-2026-48850.md) | Routine | PuTTY and 1 other: Double Free | 5.9 | 0.0032 |  |
| [CVE-2026-48852](https://patchblox.com/security/data/cve/CVE-2026-48852.md) | Routine | PuTTY and 1 other: Reachable Assertion | 3.7 | 0.0028 |  |
| [CVE-2026-48851](https://patchblox.com/security/data/cve/CVE-2026-48851.md) | Routine | PuTTY CAC and 1 other: User Interface (UI) Misrepresentation of Critical Information | 3.1 | 0.0022 |  |

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Data as of 2026-11-11T13:47:35Z UTC. Source: Patchblox Patch Radar (https://patchblox.com/security/patch-radar). Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

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