Is CVE-2019-9496 in the CISA KEV catalog?

No. CVE-2019-9496 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2019-9496?

CVE-2019-9496 has a CVSS v3 base score of 7.5 (HIGH).

What is the EPSS score for CVE-2019-9496?

CVE-2019-9496 has an EPSS score of 5.22% (91th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2019-9496?

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

CVE & CISA-KEV Catalog

CVE-2019-9496

HIGHEPSS 91th pctl

7.5

CVSS v3

NVD

Description

An invalid authentication sequence could result in the hostapd process terminating due to missing state validation steps when processing the SAE confirm message when in hostapd/AP mode. All version of hostapd with SAE support are vulnerable. An attacker may force the hostapd process to terminate, performing a denial of service attack. Both hostapd with SAE support and wpa_supplicant with SAE support prior to and including version 2.7 are affected.

CWE-642 CWE-287Improper Authentication

How to fix

Remediation Available

wpaDebian

Fixed in:2:2.7+git20190128+0c1e29f-4CVE-2019-9496

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

IntegrityNone

AvailabilityHigh

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

Exploit Intelligence

5.22%probability of exploitation in 30 days

91stpercentile

High risk: more likely to be exploited than 91% of all known CVEs.

References

Patch1

w1.fi

Other references8

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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.