Is CVE-2024-3861 in the CISA KEV catalog?

No. CVE-2024-3861 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2024-3861?

CVE-2024-3861 has a CVSS v3 base score of 4.0 (MEDIUM).

What is the EPSS score for CVE-2024-3861?

CVE-2024-3861 has an EPSS score of 0.23% (13th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2024-3861?

Upgrade firefox on debian unstable to 125.0.1-1 or later. Fixes are available for 20 affected products.

CVE & CISA-KEV Catalog

CVE-2024-3861

MEDIUM

4.0

CVSS v3

NVD

Description

If an AlignedBuffer were assigned to itself, the subsequent self-move could result in an incorrect reference count and later use-after-free. This vulnerability affects Firefox < 125, Firefox ESR < 115.10, and Thunderbird < 115.10.

CWE-416Use After Free

How to fix

Remediation Available

firefoxDebian

Fixed in:125.0.1-1CVE-2024-3861

firefoxRed Hat / RHEL

Fixed in:0:115.10.0-1.el7_9RHSA-2024:1910

Fixed in:0:115.10.0-1.el7_9.ppc64RHSA-2024:1910

Fixed in:0:115.10.0-1.el7_9RHSA-2024:1910

Fixed in:0:115.10.0-1.el8_9RHSA-2024:1912

Fixed in:0:115.10.0-1.el8_8RHSA-2024:1909

Fixed in:0:115.10.0-1.el8_9RHSA-2024:1912

Fixed in:0:115.10.0-1.el8_6RHSA-2024:1906

Fixed in:0:115.10.0-1.el8_9RHSA-2024:1912

Fixed in:0:115.10.0-1.el8_6RHSA-2024:1906

Fixed in:0:115.10.0-1.el8_2RHSA-2024:1904

Fixed in:0:115.10.0-1.el8_4RHSA-2024:1911

Fixed in:0:115.10.0-1.el8_9RHSA-2024:1912

Fixed in:0:115.10.0-1.el9_0RHSA-2024:1907

Fixed in:0:115.10.0-1.el9_2RHSA-2024:1905

Fixed in:0:115.10.0-1.el9_0RHSA-2024:1907

Fixed in:0:115.10.0-1.el9_3RHSA-2024:1908

firefoxRocky

Fixed in:0:115.10.0-1.el7_9RHSA-2024:1910

Fixed in:0:115.10.0-1.el7_9.ppc64RHSA-2024:1910

Fixed in:0:115.10.0-1.el7_9RHSA-2024:1910

Fixed in:0:115.10.0-1.el8_9RHSA-2024:1912

Fixed in:0:115.10.0-1.el8_2RHSA-2024:1904

Fixed in:0:115.10.0-1.el8_6RHSA-2024:1906

Fixed in:0:115.10.0-1.el8_8RHSA-2024:1909

Fixed in:0:115.10.0-1.el8_6RHSA-2024:1906

Fixed in:0:115.10.0-1.el8_8RHSA-2024:1909

Fixed in:0:115.10.0-1.el8_4RHSA-2024:1911

Fixed in:0:115.10.0-1.el8_8RHSA-2024:1909

Fixed in:0:115.10.0-1.el9_2RHSA-2024:1905

Fixed in:0:115.10.0-1.el9_0RHSA-2024:1907

Fixed in:0:115.10.0-1.el9_3RHSA-2024:1908

firefox-debuginfoRed Hat / RHEL

Fixed in:0:115.10.0-1.el7_9.ppc64RHSA-2024:1910

Fixed in:0:115.10.0-1.el7_9RHSA-2024:1910

Fixed in:0:115.10.0-1.el8_9RHSA-2024:1912

Fixed in:0:115.10.0-1.el8_8RHSA-2024:1909

Fixed in:0:115.10.0-1.el8_4RHSA-2024:1911

Fixed in:0:115.10.0-1.el8_9RHSA-2024:1912

Fixed in:0:115.10.0-1.el8_4RHSA-2024:1911

Fixed in:0:115.10.0-1.el8_2RHSA-2024:1904

Fixed in:0:115.10.0-1.el8_8RHSA-2024:1909

Fixed in:0:115.10.0-1.el8_9RHSA-2024:1912

Fixed in:0:115.10.0-1.el8_6RHSA-2024:1906

Fixed in:0:115.10.0-1.el8_2RHSA-2024:1904

Fixed in:0:115.10.0-1.el8_6RHSA-2024:1906

Fixed in:0:115.10.0-1.el8_9RHSA-2024:1912

Fixed in:0:115.10.0-1.el8_6RHSA-2024:1906

Fixed in:0:115.10.0-1.el9_0RHSA-2024:1907

Fixed in:0:115.10.0-1.el9_3RHSA-2024:1908

Fixed in:0:115.10.0-1.el9_2RHSA-2024:1905

firefox-debuginfoRocky

Fixed in:0:115.10.0-1.el7_9RHSA-2024:1910

Fixed in:0:115.10.0-1.el7_9.ppc64RHSA-2024:1910

Fixed in:0:115.10.0-1.el7_9RHSA-2024:1910

Fixed in:0:115.10.0-1.el8_9RHSA-2024:1912

Fixed in:0:115.10.0-1.el8_2RHSA-2024:1904

Fixed in:0:115.10.0-1.el8_8RHSA-2024:1909

Fixed in:0:115.10.0-1.el8_4RHSA-2024:1911

Fixed in:0:115.10.0-1.el8_6RHSA-2024:1906

Fixed in:0:115.10.0-1.el8_4RHSA-2024:1911

Fixed in:0:115.10.0-1.el8_6RHSA-2024:1906

Fixed in:0:115.10.0-1.el8_2RHSA-2024:1904

Fixed in:0:115.10.0-1.el8_6RHSA-2024:1906

Fixed in:0:115.10.0-1.el8_8RHSA-2024:1909

Fixed in:0:115.10.0-1.el8_9RHSA-2024:1912

Fixed in:0:115.10.0-1.el8_8RHSA-2024:1909

Fixed in:0:115.10.0-1.el8_9RHSA-2024:1912

Fixed in:0:115.10.0-1.el9_0RHSA-2024:1907

Fixed in:0:115.10.0-1.el9_3RHSA-2024:1908

Fixed in:0:115.10.0-1.el9_2RHSA-2024:1905

firefox-debugsourceRocky

Fixed in:0:115.10.0-1.el8_6RHSA-2024:1906

Fixed in:0:115.10.0-1.el8_8RHSA-2024:1909

Fixed in:0:115.10.0-1.el8_9RHSA-2024:1912

Fixed in:0:115.10.0-1.el8_2RHSA-2024:1904

Fixed in:0:115.10.0-1.el8_4RHSA-2024:1911

Fixed in:0:115.10.0-1.el8_9RHSA-2024:1912

Fixed in:0:115.10.0-1.el8_6RHSA-2024:1906

Fixed in:0:115.10.0-1.el8_4RHSA-2024:1911

Fixed in:0:115.10.0-1.el8_9RHSA-2024:1912

Fixed in:0:115.10.0-1.el8_2RHSA-2024:1904

Fixed in:0:115.10.0-1.el8_9RHSA-2024:1912

Fixed in:0:115.10.0-1.el8_8RHSA-2024:1909

Fixed in:0:115.10.0-1.el9_0RHSA-2024:1907

Fixed in:0:115.10.0-1.el9_3RHSA-2024:1908

Fixed in:0:115.10.0-1.el9_2RHSA-2024:1905

Fixed in:0:115.10.0-1.el9_3RHSA-2024:1908

Fixed in:0:115.10.0-1.el9_2RHSA-2024:1905

firefox-debugsourceRed Hat / RHEL

Fixed in:0:115.10.0-1.el8_9RHSA-2024:1912

Fixed in:0:115.10.0-1.el8_2RHSA-2024:1904

Fixed in:0:115.10.0-1.el8_6RHSA-2024:1906

Fixed in:0:115.10.0-1.el8_9RHSA-2024:1912

Fixed in:0:115.10.0-1.el8_8RHSA-2024:1909

Fixed in:0:115.10.0-1.el8_9RHSA-2024:1912

Fixed in:0:115.10.0-1.el8_6RHSA-2024:1906

Fixed in:0:115.10.0-1.el8_8RHSA-2024:1909

Fixed in:0:115.10.0-1.el8_4RHSA-2024:1911

Fixed in:0:115.10.0-1.el8_2RHSA-2024:1904

Fixed in:0:115.10.0-1.el8_4RHSA-2024:1911

Fixed in:0:115.10.0-1.el8_6RHSA-2024:1906

Fixed in:0:115.10.0-1.el8_9RHSA-2024:1912

Fixed in:0:115.10.0-1.el8_6RHSA-2024:1906

Fixed in:0:115.10.0-1.el9_0RHSA-2024:1907

Fixed in:0:115.10.0-1.el9_3RHSA-2024:1908

Fixed in:0:115.10.0-1.el9_2RHSA-2024:1905

Fixed in:0:115.10.0-1.el9_3RHSA-2024:1908

Fixed in:0:115.10.0-1.el9_2RHSA-2024:1905

Fixed in:0:115.10.0-1.el9_3RHSA-2024:1908

Fixed in:0:115.10.0-1.el9_2RHSA-2024:1905

firefox-x11Red Hat / RHEL

Fixed in:0:115.10.0-1.el9_2RHSA-2024:1905

Fixed in:0:115.10.0-1.el9_3RHSA-2024:1908

Fixed in:0:115.10.0-1.el9_2RHSA-2024:1905

firefox-x11Rocky

Fixed in:0:115.10.0-1.el9_3RHSA-2024:1908

Fixed in:0:115.10.0-1.el9_2RHSA-2024:1905

thunderbirdRed Hat / RHEL

Fixed in:0:115.10.0-2.el7_9RHSA-2024:1935

Fixed in:0:115.10.0-2.el8_4RHSA-2024:1982

Fixed in:0:115.10.0-2.el8_6RHSA-2024:1936

Fixed in:0:115.10.0-2.el8_8RHSA-2024:1937

Fixed in:0:115.10.0-2.el8_2RHSA-2024:1934

Fixed in:0:115.10.0-2.el8_9RHSA-2024:1939

Fixed in:0:115.10.0-2.el8_2RHSA-2024:1934

Fixed in:0:115.10.0-2.el8_9RHSA-2024:1939

Fixed in:0:115.10.0-2.el8_2RHSA-2024:1934

Fixed in:0:115.10.0-2.el8_9RHSA-2024:1939

Fixed in:0:115.10.0-2.el8_8RHSA-2024:1937

Fixed in:0:115.10.0-2.el8_6RHSA-2024:1936

Fixed in:0:115.10.0-2.el8_8RHSA-2024:1937

Fixed in:0:115.10.0-2.el8_4RHSA-2024:1982

Fixed in:0:115.10.0-2.el9_2RHSA-2024:1941

Fixed in:0:115.10.0-2.el9_0RHSA-2024:1938

Fixed in:0:115.10.0-2.el9_2RHSA-2024:1941

Fixed in:0:115.10.0-2.el9_0RHSA-2024:1938

Fixed in:0:115.10.0-2.el9_2RHSA-2024:1941

Fixed in:0:115.10.0-2.el9_0RHSA-2024:1938

Fixed in:0:115.10.0-2.el9_3RHSA-2024:1940

Fixed in:0:115.10.0-2.el9_0RHSA-2024:1938

Fixed in:0:115.10.0-2.el9_2RHSA-2024:1941

Fixed in:0:115.10.0-2.el9_3RHSA-2024:1940

Fixed in:0:115.10.0-2.el9_0RHSA-2024:1938

thunderbirdRocky

Fixed in:0:115.10.0-2.el7_9RHSA-2024:1935

Fixed in:0:115.10.0-2.el8_9RHSA-2024:1939

Fixed in:0:115.10.0-2.el8_4RHSA-2024:1982

Fixed in:0:115.10.0-2.el8_6RHSA-2024:1936

Fixed in:0:115.10.0-2.el8_8RHSA-2024:1937

Fixed in:0:115.10.0-2.el8_9RHSA-2024:1939

Fixed in:0:115.10.0-2.el8_8RHSA-2024:1937

Fixed in:0:115.10.0-2.el8_2RHSA-2024:1934

Fixed in:0:115.10.0-2.el8_6RHSA-2024:1936

Fixed in:0:115.10.0-2.el8_2RHSA-2024:1934

Fixed in:0:115.10.0-2.el8_9RHSA-2024:1939

Fixed in:0:115.10.0-2.el8_8RHSA-2024:1937

Fixed in:0:115.10.0-2.el8_6RHSA-2024:1936

Fixed in:0:115.10.0-2.el8_9RHSA-2024:1939

Fixed in:0:115.10.0-2.el8_4RHSA-2024:1982

Fixed in:0:115.10.0-2.el8_8RHSA-2024:1937

Fixed in:0:115.10.0-2.el8_4RHSA-2024:1982

Fixed in:0:115.10.0-2.el8_9RHSA-2024:1939

Fixed in:0:115.10.0-2.el9_0RHSA-2024:1938

Fixed in:0:115.10.0-2.el9_3RHSA-2024:1940

Fixed in:0:115.10.0-2.el9_0RHSA-2024:1938

Fixed in:0:115.10.0-2.el9_3RHSA-2024:1940

Fixed in:0:115.10.0-2.el9_0RHSA-2024:1938

Fixed in:0:115.10.0-2.el9_2RHSA-2024:1941

Fixed in:0:115.10.0-2.el9_0RHSA-2024:1938

Fixed in:0:115.10.0-2.el9_3RHSA-2024:1940

Fixed in:0:115.10.0-2.el9_2RHSA-2024:1941

Fixed in:0:115.10.0-2.el9_3RHSA-2024:1940

Fixed in:0:115.10.0-2.el9_2RHSA-2024:1941

thunderbird-debuginfoRocky

Fixed in:0:115.10.0-2.el7_9RHSA-2024:1935

Fixed in:0:115.10.0-2.el8_8RHSA-2024:1937

Fixed in:0:115.10.0-2.el8_9RHSA-2024:1939

Fixed in:0:115.10.0-2.el8_2RHSA-2024:1934

Fixed in:0:115.10.0-2.el8_9RHSA-2024:1939

Fixed in:0:115.10.0-2.el8_6RHSA-2024:1936

Fixed in:0:115.10.0-2.el8_8RHSA-2024:1937

Fixed in:0:115.10.0-2.el8_6RHSA-2024:1936

Fixed in:0:115.10.0-2.el8_8RHSA-2024:1937

Fixed in:0:115.10.0-2.el8_6RHSA-2024:1936

Fixed in:0:115.10.0-2.el8_9RHSA-2024:1939

Fixed in:0:115.10.0-2.el8_8RHSA-2024:1937

Fixed in:0:115.10.0-2.el8_4RHSA-2024:1982

Fixed in:0:115.10.0-2.el8_9RHSA-2024:1939

Fixed in:0:115.10.0-2.el8_4RHSA-2024:1982

Fixed in:0:115.10.0-2.el9_3RHSA-2024:1940

Fixed in:0:115.10.0-2.el9_0RHSA-2024:1938

Fixed in:0:115.10.0-2.el9_3RHSA-2024:1940

Fixed in:0:115.10.0-2.el9_0RHSA-2024:1938

Fixed in:0:115.10.0-2.el9_3RHSA-2024:1940

Fixed in:0:115.10.0-2.el9_0RHSA-2024:1938

Fixed in:0:115.10.0-2.el9_2RHSA-2024:1941

thunderbird-debuginfoRed Hat / RHEL

Fixed in:0:115.10.0-2.el7_9RHSA-2024:1935

Fixed in:0:115.10.0-2.el8_9RHSA-2024:1939

Fixed in:0:115.10.0-2.el8_2RHSA-2024:1934

Fixed in:0:115.10.0-2.el8_9RHSA-2024:1939

Fixed in:0:115.10.0-2.el8_8RHSA-2024:1937

Fixed in:0:115.10.0-2.el8_9RHSA-2024:1939

Fixed in:0:115.10.0-2.el8_2RHSA-2024:1934

Fixed in:0:115.10.0-2.el8_6RHSA-2024:1936

Fixed in:0:115.10.0-2.el8_4RHSA-2024:1982

Fixed in:0:115.10.0-2.el8_8RHSA-2024:1937

Fixed in:0:115.10.0-2.el8_4RHSA-2024:1982

Fixed in:0:115.10.0-2.el8_8RHSA-2024:1937

Fixed in:0:115.10.0-2.el9_3RHSA-2024:1940

Fixed in:0:115.10.0-2.el9_0RHSA-2024:1938

Fixed in:0:115.10.0-2.el9_2RHSA-2024:1941

Fixed in:0:115.10.0-2.el9_3RHSA-2024:1940

Fixed in:0:115.10.0-2.el9_0RHSA-2024:1938

Fixed in:0:115.10.0-2.el9_2RHSA-2024:1941

Fixed in:0:115.10.0-2.el9_0RHSA-2024:1938

Fixed in:0:115.10.0-2.el9_3RHSA-2024:1940

Fixed in:0:115.10.0-2.el9_2RHSA-2024:1941

thunderbird-debugsourceRed Hat / RHEL

Fixed in:0:115.10.0-2.el8_8RHSA-2024:1937

Fixed in:0:115.10.0-2.el8_4RHSA-2024:1982

Fixed in:0:115.10.0-2.el8_9RHSA-2024:1939

Fixed in:0:115.10.0-2.el8_6RHSA-2024:1936

Fixed in:0:115.10.0-2.el8_2RHSA-2024:1934

Fixed in:0:115.10.0-2.el9_0RHSA-2024:1938

Fixed in:0:115.10.0-2.el9_3RHSA-2024:1940

Fixed in:0:115.10.0-2.el9_2RHSA-2024:1941

Fixed in:0:115.10.0-2.el9_0RHSA-2024:1938

Fixed in:0:115.10.0-2.el9_3RHSA-2024:1940

Fixed in:0:115.10.0-2.el9_0RHSA-2024:1938

Fixed in:0:115.10.0-2.el9_2RHSA-2024:1941

Fixed in:0:115.10.0-2.el9_3RHSA-2024:1940

thunderbird-debugsourceRocky

Fixed in:0:115.10.0-2.el8_8RHSA-2024:1937

Fixed in:0:115.10.0-2.el8_9RHSA-2024:1939

Fixed in:0:115.10.0-2.el8_4RHSA-2024:1982

Fixed in:0:115.10.0-2.el8_9RHSA-2024:1939

Fixed in:0:115.10.0-2.el8_6RHSA-2024:1936

Fixed in:0:115.10.0-2.el8_2RHSA-2024:1934

Fixed in:0:115.10.0-2.el9_3RHSA-2024:1940

Fixed in:0:115.10.0-2.el9_2RHSA-2024:1941

Fixed in:0:115.10.0-2.el9_0RHSA-2024:1938

Fixed in:0:115.10.0-2.el9_3RHSA-2024:1940

Fixed in:0:115.10.0-2.el9_0RHSA-2024:1938

Fixed in:0:115.10.0-2.el9_3RHSA-2024:1940

Fixed in:0:115.10.0-2.el9_0RHSA-2024:1938

Fixed in:0:115.10.0-2.el9_3RHSA-2024:1940

Fixed in:0:115.10.0-2.el9_2RHSA-2024:1941

firefoxUbuntu

Fixed in:125.0.2+build1-0ubuntu0.20.04.2USN-6747-1

thunderbirdUbuntu

Fixed in:1:115.10.1+build1-0ubuntu0.20.04.1USN-6750-1

Fixed in:1:115.10.1+build1-0ubuntu0.22.04.1USN-6750-1

Fixed in:1:115.10.1+build1-0ubuntu0.23.10.1USN-6750-1

DeveloperEditionWindows application

Affected:115.0Fixed in:115.0Mozilla

Affected:125.0Fixed in:125.0Mozilla

Mozilla Firefox (en-US)Windows application

Affected:115.0Fixed in:115.0Mozilla

Affected:125.0Fixed in:125.0Mozilla

Mozilla Thunderbird (en-US)Windows application

Affected:115.0Fixed in:115.0Mozilla

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 VectorLocal

Attack ComplexityLow

Privileges RequiredNone

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityLow

IntegrityNone

AvailabilityNone

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

Exploit Intelligence

0.23%probability of exploitation in 30 days

13thpercentile

Low risk: more likely to be exploited than 13% of all known CVEs.

References

Vendor Advisory3

Third-Party Advisory2

Issue Tracking1

bugzilla.mozilla.org

Related Vulnerabilities

Other CWE-416 (Use After Free) vulnerabilities, ordered by exploit likelihood. View all

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CVE-2019-0708	Critical	9.8	100%	KEV + Ransom	-
CVE-2021-31166	Critical	9.8	100%	KEV	Fix
CVE-2015-5119	Critical	9.8	99%	KEV	-
CVE-2010-3962	High	8.1	97%	KEV	-
CVE-2015-0313	Critical	9.8	96%	KEV	Fix
CVE-2017-9798	High	7.5	95%	-	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 2025-04-01.