Is CVE-2023-25734 in the CISA KEV catalog?

No. CVE-2023-25734 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2023-25734?

CVE-2023-25734 has a CVSS v3 base score of 8.1 (HIGH).

What is the EPSS score for CVE-2023-25734?

CVE-2023-25734 has an EPSS score of 0.78% (51th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2023-25734?

Upgrade DeveloperEdition to 110.0 or later. Fixes are available for 4 affected products.

CVE & CISA-KEV Catalog

CVE-2023-25734

HIGH

8.1

CVSS v3

NVD

Description

After downloading a Windows .url shortcut from the local filesystem, an attacker could supply a remote path that would lead to unexpected network requests from the operating system. This also had the potential to leak NTLM credentials to the resource. *This bug only affects Firefox on Windows. Other operating systems are unaffected.*. This vulnerability affects Firefox < 110, Thunderbird < 102.8, and Firefox ESR < 102.8.

CWE-601Open Redirect

How to fix

Remediation Available

DeveloperEditionWindows application

Affected:110.0Fixed in:110.0Mozilla

Mozilla Firefox (en-US)Windows application

Affected:110.0Fixed in:110.0Mozilla

Mozilla Firefox ESR (en-US)Windows application

Affected:102.8Fixed in:102.8Mozilla

Mozilla Thunderbird (en-US)Windows application

Affected:102.8Fixed in:102.8Mozilla

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

IntegrityHigh

AvailabilityNone

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

Exploit Intelligence

0.78%probability of exploitation in 30 days

51stpercentile

Moderate risk: more likely to be exploited than 51% of all known CVEs.

References

Exploit1

bugzilla.mozilla.org

Vendor Advisory3

Issue Tracking3

Related Vulnerabilities

Other CWE-601 (Open Redirect) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2025-4123	High	7.6	98%	-	Fix
CVE-2018-11784	Medium	4.3	94%	-	Fix
CVE-2021-22881	Medium	6.1	87%	-	Fix
CVE-2022-45402	Medium	6.1	82%	-	Fix
CVE-2017-1000117	High	8.8	78%	-	Fix
CVE-2019-10098	Medium	6.1	74%	-	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 2025-01-09.