Is CVE-2019-9494 in the CISA KEV catalog?

No. CVE-2019-9494 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2019-9494?

CVE-2019-9494 has a CVSS v3 base score of 5.9 (MEDIUM).

What is the EPSS score for CVE-2019-9494?

CVE-2019-9494 has an EPSS score of 3.74% (89th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2019-9494?

Upgrade wpa on debian 11 to 2:2.7+git20190128+0c1e29f-4 or later.

CVE & CISA-KEV Catalog

CVE-2019-9494

MEDIUMEPSS 89th pctl

5.9

CVSS v3

NVD

Description

The implementations of SAE in hostapd and wpa_supplicant are vulnerable to side channel attacks as a result of observable timing differences and cache access patterns. An attacker may be able to gain leaked information from a side channel attack that can be used for full password recovery. Both hostapd with SAE support and wpa_supplicant with SAE support prior to and including version 2.7 are affected.

CWE-208 CWE-524 CWE-203

How to fix

Remediation Available

wpaDebian

Fixed in:2:2.7+git20190128+0c1e29f-4CVE-2019-9494

TridentStack Control can deploy fixes like this automatically across your Windows, macOS, and Linux fleet. See how it works

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 ComplexityHigh

Privileges RequiredNone

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityNone

AvailabilityNone

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N

Exploit Intelligence

3.74%probability of exploitation in 30 days

89thpercentile

Elevated risk: more likely to be exploited than 89% of all known CVEs.

References

Patch1

w1.fi

Third-Party Advisory5

Other references3

Related Vulnerabilities

Other CWE-208 vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2019-16782	Medium	6.3	3.7%	-	Fix
CVE-2025-53940	Unscored	-	2.6%	-	-
CVE-2020-1926	Medium	5.9	2.5%	-	Fix
CVE-2021-43298	Critical	9.8	2.3%	-	Fix
CVE-2024-29995	High	8.1	1.5%	-	Fix
CVE-2022-31142	High	7.5	1.4%	-	Fix

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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.