CVE-2019-9894
putty - security update
7.5
HIGH
CVSS 3.1
EPSS 0.66%
Description
A remotely triggerable memory overwrite in RSA key exchange in PuTTY before 0.71 can occur before host key verification.
How to fix CVE-2019-9894
To remediate CVE-2019-9894, upgrade the affected package to a fixed version below.
- Alpine/putty—upgrade to 0.71-r0 or later
- Debian/putty—upgrade to 0.70-6 or later
- —upgrade to 0.63-10+deb8u2 or later
- —upgrade to 0.67-3+deb9u1 or later
Is CVE-2019-9894 being exploited?
Low — EPSS is 0.7%, meaning exploitation activity has not been observed at scale.
Affected packages (4)
- from 0, < 0.71-r0
- from 0, < 0.70-6
- from 0, < 0.63-10+deb8u2
- from 0, < 0.67-3+deb9u1
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | HIGH7.5 | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N |