Vendor
Putty vulnerabilities
Updated . Rebuilt every hour.
Junglewise Threat Intelligence has tracked 5 vulnerabilities in Putty: 0 in the last 7 days and 0 in the last 90 days, 0 of them critical and 0 exploited in the wild. The most recent, CVE-2026-48852, was published on 25 May 2026. 1 technology has a page of its own.
- Last 7 days
- 0
- Last 90 days
- 0
- Critical, all time
- 0
- Exploited in the wild
- 0
About Putty
The developers of the PuTTY terminal emulator and network file transfer application.
Putty technologies
Latest Putty vulnerabilities
- CVE-2026-48852: PuTTY assertion failure in ECDSA signature verificationlowCVSS 3.7EPSS 0.0%
- CVE-2026-48851: PuTTY trust sigil spoofing in Telnet and Rlogin sessionslowCVSS 3.1EPSS 0.0%
- CVE-2026-48850: PuTTY double free in RSA KEXlowCVSS 3.7EPSS 0.0%
- CVE-2026-4115: PuTTY Ed25519 signature malleability in eddsa_verifylowCVSS 3.7EPSS 0.0%
- CVE-2023-48795: OpenSSH and others SSH prefix truncation vulnerability (Terrapin)mediumCVSS 5.9EPSS 93.3%
Most severe Putty vulnerabilities
Exploited in the wild first, then by severity and CVSS score.
- CVE-2023-48795: OpenSSH and others SSH prefix truncation vulnerability (Terrapin)mediumCVSS 5.9EPSS 93.3%
- CVE-2026-48852: PuTTY assertion failure in ECDSA signature verificationlowCVSS 3.7EPSS 0.0%
- CVE-2026-48850: PuTTY double free in RSA KEXlowCVSS 3.7EPSS 0.0%
- CVE-2026-4115: PuTTY Ed25519 signature malleability in eddsa_verifylowCVSS 3.7EPSS 0.0%
- CVE-2026-48851: PuTTY trust sigil spoofing in Telnet and Rlogin sessionslowCVSS 3.1EPSS 0.0%
Vulnerabilities per week
The last 13 weeks, by the week each vulnerability was published.
| Week of | Bar | Vulns | Critical |
|---|---|---|---|
| 29 Jun 2026 | 0 | 0 | |
| 6 Jul 2026 | 0 | 0 | |
| 13 Jul 2026 | 0 | 0 | |
| 20 Jul 2026 | 0 | 0 | |
| 27 Jul 2026 | 0 | 0 | |
| 3 Aug 2026 | 0 | 0 | |
| 10 Aug 2026 | 0 | 0 | |
| 17 Aug 2026 | 0 | 0 | |
| 24 Aug 2026 | 0 | 0 | |
| 31 Aug 2026 | 0 | 0 | |
| 7 Sep 2026 | 0 | 0 | |
| 14 Sep 2026 | 0 | 0 | |
| 21 Sep 2026 | 0 | 0 |
How this is built
Junglewise Threat Intelligence collects vulnerabilities from NVD, GitHub Security Advisories, OSV, the CISA Known Exploited Vulnerabilities catalog, FIRST EPSS and vendor advisories, and matches each one to the technologies and vendors it affects. Dates are the date a vulnerability was published, in UTC.
The pages are rebuilt from the database every hour. Frozen weekly and monthly reports never change once published, so they can be cited.
Use this data
The same data is at https://junglewise.ai/threats/vendors/putty.json, for scripts and language models. It is free to reuse under CC BY 4.0 with a link back to this page.
Cite as: Junglewise Threat Intelligence, "Putty vulnerabilities", https://junglewise.ai/threats/vendors/putty, 26 September 2026.