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Vulnerabilities / CVE-2019-9895

critical

CVE-2019-9895

In PuTTY versions before 0.71 on Unix, a remotely triggerable buffer o ...

Published Modified CWE 119
In the Trivy database since at least 24 Oct 2026, 07:11 UTCWhen it arrived before that build is not recorded.

Severity by source

NVD9.8CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Trivy's own label is CRITICAL. Rated critical by NVD. Rated lower by Ubuntu (medium).

Description

In PuTTY versions before 0.71 on Unix, a remotely triggerable buffer overflow exists in any kind of server-to-client forwarding.

Affected packages and fixed versions

SourcePackageFixed in
alpine 3.10putty0.71-r0
alpine 3.11putty0.71-r0
alpine 3.12putty0.71-r0
alpine 3.13putty0.71-r0
alpine 3.14putty0.71-r0
alpine 3.15putty0.71-r0
alpine 3.16putty0.71-r0
alpine 3.17putty0.71-r0
alpine 3.18putty0.71-r0
alpine 3.19putty0.71-r0
alpine 3.20putty0.71-r0
alpine 3.21putty0.71-r0
Show all 29 entries from 29 sources
SourcePackageFixed in
alpine 3.10putty0.71-r0
alpine 3.11putty0.71-r0
alpine 3.12putty0.71-r0
alpine 3.13putty0.71-r0
alpine 3.14putty0.71-r0
alpine 3.15putty0.71-r0
alpine 3.16putty0.71-r0
alpine 3.17putty0.71-r0
alpine 3.18putty0.71-r0
alpine 3.19putty0.71-r0
alpine 3.20putty0.71-r0
alpine 3.21putty0.71-r0
alpine 3.22putty0.71-r0
alpine 3.23putty0.71-r0
alpine 3.24putty0.71-r0
alpine 3.6putty0.71-r0
alpine 3.7putty0.71-r0
alpine 3.8putty0.71-r0
alpine 3.9putty0.71-r0
alpine edgeputty0.71-r0
debian 11putty0.70-6
debian 12putty0.70-6
debian 13putty0.70-6
debian 14putty0.70-6
debian 8puttyno fix listed
debian 9putty0.67-3+deb9u1
echoputty0.70-6
ubuntu 16.04putty0.67-3+deb9u1build0.16.04.1
ubuntu 16.04-ESMputty0.67-3+deb9u1build0.16.04.1

References

All 9 references

Vulnerability data compiled from the Trivy vulnerability database (trivy-db, Aqua Security, Apache License 2.0), which aggregates third-party advisories. CVE records are published by The MITRE Corporation under the CVE Terms of Use; CVE is a trademark of MITRE. This product uses data from the NVD API but is not endorsed or certified by the NVD. Severity, titles and advisory data from the GitHub Advisory Database (CC BY 4.0), Red Hat security data (CC BY 4.0) and the other sources linked on each entry. Entries may be summarised or re-formatted; the linked original is the authoritative record.