CVE catalog
CVE-2019-9894
putty: CVE-2019-9894
- Severity
- High · CVSS 7.5
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N - Published
- Source
- [NVD] · [CVE record]
- EPSS
- 2.45% · Oct 25, 2026
A remotely triggerable memory overwrite in RSA key exchange in PuTTY before 0.71 can occur before host key verification.
Vulnerable and fixed packages
Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.
| Distribution | Package | Release | Version | Status |
|---|---|---|---|---|
| Debian | putty | sid | 0.85-3 | fixed |
| Debian | putty | forky | 0.85-3 | fixed |
| Debian | putty | trixie | 0.83-3 | fixed |
| Debian | putty | bookworm | 0.78-2+deb12u2 | fixed |
| Debian | putty | bookworm-security | 0.78-2+deb12u1 | fixed |
| Alpine | putty | 3.10 | 0.71-r0 | fixed |
| Alpine | putty | 3.11 | 0.71-r0 | fixed |
| Alpine | putty | 3.12 | 0.71-r0 | fixed |
| Alpine | putty | 3.13 | 0.71-r0 | fixed |
| Alpine | putty | 3.14 | 0.71-r0 | fixed |
| Alpine | putty | 3.15 | 0.71-r0 | fixed |
| Alpine | putty | 3.16 | 0.71-r0 | fixed |
| Alpine | putty | 3.17 | 0.71-r0 | fixed |
| Alpine | putty | 3.18 | 0.71-r0 | fixed |
| Alpine | putty | 3.19 | 0.71-r0 | fixed |
| Alpine | putty | 3.6 | 0.71-r0 | fixed |
| Alpine | putty | 3.7 | 0.71-r0 | fixed |
| Alpine | putty | 3.8 | 0.71-r0 | fixed |
| Alpine | putty | 3.9 | 0.71-r0 | fixed |
| Opensuse | putty | leap 15.0 | 0.71-lp150.9.1 | fixed |
| Suse | putty | package hub 15 | 0.71-bp150.4.3.1 | fixed |
| Ubuntu | putty | 16.04 | 0.65-2 | vulnerable |
| Ubuntu | putty | 16.04 | 0.66-1 | vulnerable |
| Ubuntu | putty | 16.04 | 0.66-2 | vulnerable |
| Ubuntu | putty | 16.04 | 0.66-3 | vulnerable |
| Ubuntu | putty | 16.04 | 0.66-4 | vulnerable |
| Ubuntu | putty | 16.04 | 0.67-1 | vulnerable |
| Ubuntu | putty | 16.04 | 0.67-2 | vulnerable |
| Ubuntu | putty | 16.04 | 0.67-3build0.16.04.1 | vulnerable |
| Ubuntu | putty | 16.04 | 0.67-3+deb9u1build0.16.04.1 | fixed |
| Ubuntu | putty | 18.04 | 0.70-1 | vulnerable |
| Ubuntu | putty | 18.04 | 0.70-2 | vulnerable |
| Ubuntu | putty | 18.04 | 0.70-3 | vulnerable |
| Ubuntu | putty | 18.04 | 0.70-4 | vulnerable |
Fixed-version evidence
| Distribution | Package | Type | Release | Fixed version | Urgency | Origin | Bugs |
|---|---|---|---|---|---|---|---|
| Debian | putty | source | sid | 0.70-6 | not yet assigned | Not reported | Not reported |
| Debian | putty | source | forky | 0.70-6 | not yet assigned | Not reported | Not reported |
| Debian | putty | source | trixie | 0.70-6 | not yet assigned | Not reported | Not reported |
| Debian | putty | source | bookworm | 0.70-6 | not yet assigned | Not reported | Not reported |
| Alpine | putty | apk | 3.10 | 0.71-r0 | Not reported | ALPINE-CVE-2019-9894 | Not reported |
| Alpine | putty | apk | 3.11 | 0.71-r0 | Not reported | ALPINE-CVE-2019-9894 | Not reported |
| Alpine | putty | apk | 3.12 | 0.71-r0 | Not reported | ALPINE-CVE-2019-9894 | Not reported |
| Alpine | putty | apk | 3.13 | 0.71-r0 | Not reported | ALPINE-CVE-2019-9894 | Not reported |
| Alpine | putty | apk | 3.14 | 0.71-r0 | Not reported | ALPINE-CVE-2019-9894 | Not reported |
| Alpine | putty | apk | 3.15 | 0.71-r0 | Not reported | ALPINE-CVE-2019-9894 | Not reported |
| Alpine | putty | apk | 3.16 | 0.71-r0 | Not reported | ALPINE-CVE-2019-9894 | Not reported |
| Alpine | putty | apk | 3.17 | 0.71-r0 | Not reported | ALPINE-CVE-2019-9894 | Not reported |
| Alpine | putty | apk | 3.18 | 0.71-r0 | Not reported | ALPINE-CVE-2019-9894 | Not reported |
| Alpine | putty | apk | 3.19 | 0.71-r0 | Not reported | ALPINE-CVE-2019-9894 | Not reported |
| Alpine | putty | apk | 3.6 | 0.71-r0 | Not reported | ALPINE-CVE-2019-9894 | Not reported |
| Alpine | putty | apk | 3.7 | 0.71-r0 | Not reported | ALPINE-CVE-2019-9894 | Not reported |
| Alpine | putty | apk | 3.8 | 0.71-r0 | Not reported | ALPINE-CVE-2019-9894 | Not reported |
| Alpine | putty | apk | 3.9 | 0.71-r0 | Not reported | ALPINE-CVE-2019-9894 | Not reported |
| Opensuse | putty | rpm | leap 15.0 | 0.71-lp150.9.1 | Not reported | OPENSUSE-SU-2019:1113-1 | Not reported |
| Suse | putty | rpm | package hub 15 | 0.71-bp150.4.3.1 | Not reported | OPENSUSE-SU-2019:1123-1 | Not reported |
| Ubuntu | putty | deb | 16.04 | 0.67-3+deb9u1build0.16.04.1 | Not reported | UBUNTU-CVE-2019-9894 | Not reported |
OpenFactory catalog packages
[Debian 12 (Bookworm)]
- [pterm]Fixed
Source package: [putty]
Details (4)
0.78-2+deb12u2· amd64 · bookwormFixed · Fixed:
0.70-6dsa · putty · debian · bookworm; dsa · putty · debian · 12
0.78-2+deb12u2· arm64 · bookwormFixed · Fixed:
0.70-6dsa · putty · debian · bookworm; dsa · putty · debian · 12
0.78-2+deb12u1· amd64 · bookworm-securityFixed · Fixed:
0.70-6dsa · putty · debian · bookworm; dsa · putty · debian · 12
0.78-2+deb12u1· arm64 · bookworm-securityFixed · Fixed:
0.70-6dsa · putty · debian · bookworm; dsa · putty · debian · 12
- [putty]Fixed
Details (4)
0.78-2+deb12u2· amd64 · bookwormFixed · Fixed:
0.70-6dsa · putty · debian · bookworm; dsa · putty · debian · 12
0.78-2+deb12u2· arm64 · bookwormFixed · Fixed:
0.70-6dsa · putty · debian · bookworm; dsa · putty · debian · 12
0.78-2+deb12u1· amd64 · bookworm-securityFixed · Fixed:
0.70-6dsa · putty · debian · bookworm; dsa · putty · debian · 12
0.78-2+deb12u1· arm64 · bookworm-securityFixed · Fixed:
0.70-6dsa · putty · debian · bookworm; dsa · putty · debian · 12
- [putty-doc]Fixed
Source package: [putty]
Details (4)
0.78-2+deb12u2· all · bookwormFixed · Fixed:
0.70-6dsa · putty · debian · bookworm; dsa · putty · debian · 12
0.78-2+deb12u2· all · bookwormFixed · Fixed:
0.70-6dsa · putty · debian · bookworm; dsa · putty · debian · 12
0.78-2+deb12u1· all · bookworm-securityFixed · Fixed:
0.70-6dsa · putty · debian · bookworm; dsa · putty · debian · 12
0.78-2+deb12u1· all · bookworm-securityFixed · Fixed:
0.70-6dsa · putty · debian · bookworm; dsa · putty · debian · 12
- [putty-tools]Fixed
Source package: [putty]
Details (4)
0.78-2+deb12u2· amd64 · bookwormFixed · Fixed:
0.70-6dsa · putty · debian · bookworm; dsa · putty · debian · 12
0.78-2+deb12u2· arm64 · bookwormFixed · Fixed:
0.70-6dsa · putty · debian · bookworm; dsa · putty · debian · 12
0.78-2+deb12u1· amd64 · bookworm-securityFixed · Fixed:
0.70-6dsa · putty · debian · bookworm; dsa · putty · debian · 12
0.78-2+deb12u1· arm64 · bookworm-securityFixed · Fixed:
0.70-6dsa · putty · debian · bookworm; dsa · putty · debian · 12
[Debian 13 (Trixie)]
- [pterm]Fixed
Source package: [putty]
Details (2)
0.83-3· amd64 · trixieFixed · Fixed:
0.70-6dsa · putty · debian · 13
0.83-3· arm64 · trixieFixed · Fixed:
0.70-6dsa · putty · debian · 13
- [putty]Fixed
Details (2)
0.83-3· amd64 · trixieFixed · Fixed:
0.70-6dsa · putty · debian · 13
0.83-3· arm64 · trixieFixed · Fixed:
0.70-6dsa · putty · debian · 13
- [putty-doc]Fixed
Source package: [putty]
Details (2)
0.83-3· all · trixieFixed · Fixed:
0.70-6dsa · putty · debian · 13
0.83-3· all · trixieFixed · Fixed:
0.70-6dsa · putty · debian · 13
- [putty-tools]Fixed
Source package: [putty]
Details (2)
0.83-3· amd64 · trixieFixed · Fixed:
0.70-6dsa · putty · debian · 13
0.83-3· arm64 · trixieFixed · Fixed:
0.70-6dsa · putty · debian · 13
Observed:
References
- [https://ftp.suse.com/pub/projects/security/csaf/opensuse-su-2019_1113-1.json]
- [https://osv.dev/vulnerability/ALPINE-CVE-2019-9894]
- [https://osv.dev/vulnerability/DEBIAN-CVE-2019-9894]
- [https://osv.dev/vulnerability/DLA-1763-1]
- [https://osv.dev/vulnerability/DSA-4423-1]
- [https://osv.dev/vulnerability/UBUNTU-CVE-2019-9894]
- [https://osv.dev/vulnerability/openSUSE-SU-2019:1113-1]
- [https://osv.dev/vulnerability/openSUSE-SU-2019:1123-1]
- [https://security-tracker.debian.org/tracker/CVE-2019-9894]
- [https://security.access.redhat.com/data/csaf/v2/vex/2019/cve-2019-9894.json]
[Debian Security Tracker] · [FIRST EPSS] · [OSV Package Vulnerability Database] · [Red Hat security advisories and VEX] · [SUSE security advisories and VEX]