Is CVE-2023-5168 in the CISA KEV catalog?

No. CVE-2023-5168 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2023-5168?

CVE-2023-5168 has a CVSS v3 base score of 9.8 (CRITICAL).

What is the EPSS score for CVE-2023-5168?

CVE-2023-5168 has an EPSS score of 0.92% (56th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2023-5168?

Upgrade DeveloperEdition to 118 or later. Fixes are available for 4 affected products.

CVE & CISA-KEV Catalog

CVE-2023-5168

CRITICAL

9.8

CVSS v3

NVD

Description

A compromised content process could have provided malicious data to `FilterNodeD2D1` resulting in an out-of-bounds write, leading to a potentially exploitable crash in a privileged process. *This bug only affects Firefox on Windows. Other operating systems are unaffected.* This vulnerability affects Firefox < 118, Firefox ESR < 115.3, and Thunderbird < 115.3.

CWE-787Out-of-bounds Write

How to fix

Remediation Available

DeveloperEditionWindows application

Affected:118Fixed in:118Mozilla

Mozilla Firefox (en-US)Windows application

Affected:118Fixed in:118Mozilla

Mozilla Firefox ESR (en-US)Windows application

Affected:115.3Fixed in:115.3Mozilla

Mozilla Thunderbird (en-US)Windows application

Affected:115.3Fixed in:115.3Mozilla

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

ConfidentialityHigh

IntegrityHigh

AvailabilityHigh

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

Exploit Intelligence

0.92%probability of exploitation in 30 days

56thpercentile

Moderate risk: more likely to be exploited than 56% of all known CVEs.

References

Vendor Advisory3

Other references1

bugzilla.mozilla.org

Related Vulnerabilities

Other CWE-787 (Out-of-bounds Write) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2025-22457	Critical	9.0	100%	KEV + Ransom	Fix
CVE-2025-0282	Critical	9.0	100%	KEV + Ransom	-
CVE-2015-3113	Critical	9.8	100%	KEV	Fix
CVE-2021-20038	Critical	9.8	100%	KEV + Ransom	-
CVE-2023-4863	High	8.8	100%	KEV	Fix
CVE-2020-16040	Medium	6.5	100%	-	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 2025-05-01.