{"schema_version":1,"title":"PuTTY vulnerabilities","summary":"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.","url":"https://junglewise.ai/threats/technologies/putty","json_url":"https://junglewise.ai/threats/technologies/putty.json","publisher":"Junglewise Threat Intelligence","license":"CC-BY-4.0","license_url":"https://creativecommons.org/licenses/by/4.0/","attribution":"Junglewise Threat Intelligence, https://junglewise.ai/threats/technologies/putty","sources":"NVD, GitHub Security Advisories, OSV, the CISA Known Exploited Vulnerabilities catalog, FIRST EPSS and vendor advisories","kind":"technology","counts":{"high":0,"all_time":5,"critical":0,"exploited":0,"last_7_days":0,"last_30_days":0,"last_90_days":0,"last_365_days":4},"latest":[{"cve":"CVE-2026-48852","cvss":3.7,"epss":0.0004,"slug":"cve-2026-48852-putty-assertion-failure-in-ecdsa-signature-verification","title":"PuTTY assertion failure in ECDSA signature verification","severity":"low","exploited":false,"published_at":"2026-05-25T21:16:35.543+00:00","url":"https://junglewise.ai/threats/cve-2026-48852-putty-assertion-failure-in-ecdsa-signature-verification"},{"cve":"CVE-2026-48851","cvss":3.1,"epss":0.0003,"slug":"cve-2026-48851-putty-trust-sigil-spoofing-in-telnet-and-rlogin-sessions","title":"PuTTY trust sigil spoofing in Telnet and Rlogin sessions","severity":"low","exploited":false,"published_at":"2026-05-25T21:16:35.4+00:00","url":"https://junglewise.ai/threats/cve-2026-48851-putty-trust-sigil-spoofing-in-telnet-and-rlogin-sessions"},{"cve":"CVE-2026-48850","cvss":3.7,"epss":0.0004,"slug":"cve-2026-48850-putty-double-free-in-rsa-kex","title":"PuTTY double free in RSA KEX","severity":"low","exploited":false,"published_at":"2026-05-25T21:16:35.267+00:00","url":"https://junglewise.ai/threats/cve-2026-48850-putty-double-free-in-rsa-kex"},{"cve":"CVE-2026-4115","cvss":3.7,"epss":0.0001,"slug":"cve-2026-4115-putty-ed25519-signature-malleability-in-eddsa-verify","title":"PuTTY Ed25519 signature malleability in eddsa_verify","severity":"low","exploited":false,"published_at":"2026-03-22T13:16:20.377+00:00","url":"https://junglewise.ai/threats/cve-2026-4115-putty-ed25519-signature-malleability-in-eddsa-verify"},{"cve":"CVE-2023-48795","cvss":5.9,"epss":0.9331,"slug":"cve-2023-48795-openssh-and-others-ssh-prefix-truncation-vulnerability-terrapin","title":"OpenSSH and others SSH prefix truncation vulnerability (Terrapin)","severity":"medium","exploited":false,"published_at":"2023-12-18T16:15:10.897+00:00","url":"https://junglewise.ai/threats/cve-2023-48795-openssh-and-others-ssh-prefix-truncation-vulnerability-terrapin"}],"weekly":[{"week":"2026-07-06","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-07-13","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-07-20","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-07-27","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-08-03","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-08-10","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-08-17","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-08-24","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-08-31","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-09-07","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-09-14","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-09-21","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-09-28","critical":0,"exploited":0,"vulnerabilities":0}],"related":[],"technology":{"hub":true,"name":"PuTTY","slug":"putty","vendor":{"name":"Putty","slug":"putty","url":"https://junglewise.ai/threats/vendors/putty"},"aliases":[],"category":"client-application","homepage":"https://www.chiark.greenend.org.uk/~sgtatham/putty/","repo_url":"https://git.tartarus.org/?p=simon/putty.git","description":"PuTTY is a free and open-source terminal emulator, serial console and network file transfer application.","url":"https://junglewise.ai/threats/technologies/putty"},"most_severe":[{"cve":"CVE-2023-48795","cvss":5.9,"epss":0.9331,"slug":"cve-2023-48795-openssh-and-others-ssh-prefix-truncation-vulnerability-terrapin","title":"OpenSSH and others SSH prefix truncation vulnerability (Terrapin)","severity":"medium","exploited":false,"published_at":"2023-12-18T16:15:10.897+00:00","url":"https://junglewise.ai/threats/cve-2023-48795-openssh-and-others-ssh-prefix-truncation-vulnerability-terrapin"},{"cve":"CVE-2026-48852","cvss":3.7,"epss":0.0004,"slug":"cve-2026-48852-putty-assertion-failure-in-ecdsa-signature-verification","title":"PuTTY assertion failure in ECDSA signature verification","severity":"low","exploited":false,"published_at":"2026-05-25T21:16:35.543+00:00","url":"https://junglewise.ai/threats/cve-2026-48852-putty-assertion-failure-in-ecdsa-signature-verification"},{"cve":"CVE-2026-48850","cvss":3.7,"epss":0.0004,"slug":"cve-2026-48850-putty-double-free-in-rsa-kex","title":"PuTTY double free in RSA KEX","severity":"low","exploited":false,"published_at":"2026-05-25T21:16:35.267+00:00","url":"https://junglewise.ai/threats/cve-2026-48850-putty-double-free-in-rsa-kex"},{"cve":"CVE-2026-4115","cvss":3.7,"epss":0.0001,"slug":"cve-2026-4115-putty-ed25519-signature-malleability-in-eddsa-verify","title":"PuTTY Ed25519 signature malleability in eddsa_verify","severity":"low","exploited":false,"published_at":"2026-03-22T13:16:20.377+00:00","url":"https://junglewise.ai/threats/cve-2026-4115-putty-ed25519-signature-malleability-in-eddsa-verify"},{"cve":"CVE-2026-48851","cvss":3.1,"epss":0.0003,"slug":"cve-2026-48851-putty-trust-sigil-spoofing-in-telnet-and-rlogin-sessions","title":"PuTTY trust sigil spoofing in Telnet and Rlogin sessions","severity":"low","exploited":false,"published_at":"2026-05-25T21:16:35.4+00:00","url":"https://junglewise.ai/threats/cve-2026-48851-putty-trust-sigil-spoofing-in-telnet-and-rlogin-sessions"}],"generated_at":"2026-09-28T03:07:00.154823+00:00"}