Is CVE-2023-23597 in the CISA KEV catalog?

No. CVE-2023-23597 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2023-23597?

CVE-2023-23597 has a CVSS v3 base score of 6.5 (MEDIUM).

What is the EPSS score for CVE-2023-23597?

CVE-2023-23597 has an EPSS score of 0.34% (26th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2023-23597?

Upgrade firefox on debian unstable to 109.0-1 or later. Fixes are available for 4 affected products.

CVE & CISA-KEV Catalog

CVE-2023-23597

MEDIUM

6.5

CVSS v3

NVD

Description

A compromised web child process could disable web security opening restrictions, leading to a new child process being spawned within the `file://` context. Given a reliable exploit primitive, this new process could be exploited again leading to arbitrary file read. This vulnerability affects Firefox < 109.

CWE-326

How to fix

Remediation Available

firefoxDebian

Fixed in:109.0-1CVE-2023-23597

firefoxUbuntu

Fixed in:109.0+build2-0ubuntu0.18.04.1USN-5816-1

Fixed in:109.0+build2-0ubuntu0.20.04.1USN-5816-1

DeveloperEditionWindows application

Affected:109.0Fixed in:109.0Mozilla

Mozilla Firefox (en-US)Windows application

Affected:109.0Fixed in:109.0Mozilla

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 InteractionRequired

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityNone

AvailabilityNone

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

Exploit Intelligence

0.34%probability of exploitation in 30 days

26thpercentile

Low risk: more likely to be exploited than 26% of all known CVEs.

References

Vendor Advisory2

Related Vulnerabilities

Other CWE-326 vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2014-0224	High	7.4	95%	-	Fix
CVE-2017-1000486	Critical	9.8	94%	KEV	Fix
CVE-2013-2566	Medium	5.9	84%	-	Fix
CVE-2017-11317	Critical	9.8	83%	KEV	-
CVE-2018-18325	High	7.5	74%	KEV	-
CVE-2018-15811	High	7.5	74%	KEV	-

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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 2025-12-18.