Is CVE-2019-9894 in the CISA KEV catalog?

No. CVE-2019-9894 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2019-9894?

CVE-2019-9894 has a CVSS v3 base score of 7.5 (HIGH).

What is the EPSS score for CVE-2019-9894?

CVE-2019-9894 has an EPSS score of 2.45% (82th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2019-9894?

Upgrade putty on debian 11 to 0.70-6 or later. Fixes are available for 2 affected products.

CVE & CISA-KEV Catalog

CVE-2019-9894

HIGHEPSS 82th pctl

7.5

CVSS v3

NVD

Description

A remotely triggerable memory overwrite in RSA key exchange in PuTTY before 0.71 can occur before host key verification.

CWE-320

How to fix

Remediation Available

puttyDebian

Fixed in:0.70-6CVE-2019-9894

PuTTYWindows application

Affected:0.71Fixed in:0.71Simon Tatham

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredNone

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityNone

IntegrityHigh

AvailabilityNone

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

Exploit Intelligence

2.45%probability of exploitation in 30 days

82ndpercentile

Elevated risk: more likely to be exploited than 82% of all known CVEs.

References

Patch1

security.netapp.com

Third-Party Advisory6

Other references2

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2024-11-21.