CVE-2024-29943

highpriority · track · 18EPSS 0.229 · 98 %ileexploit · PoCDEEURUUS

grimoire priorityP1 · Urgent

Exploitable?

Public exploit

3 exploits · PoC

Likely / severe?

22.9% (98th) EPSS

CVSS 8.8 · high

Is it mine?

25 products

Check your exposure

Who says so?

4 sources

cnnvd · enisa_euvd · fstec_bdu · cert_bund

EPSS · scored 2026-10-27

An attacker was able to perform an out-of-bounds read or write on a JavaScript object by fooling range-based bounds check elimination. This vulnerability affects Firefox < 124.0.1.

cvss

Technical severity, 0–10. One row per scoring source.

9.8

010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · high–critical · 8.8–9.8

v3.18.8highAV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:Hsecondary · FSTEC (BDU) RU

v3.19.8criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:Hsecondary · ENISA EU

v3.19.8criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:Hsecondaryexploitability 3.9 · impact 5.9

v3.19.3criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:Psecondary · CVSS-BT (t0sche)

ssvc

A stakeholder decision — act, attend, or track — from exploitation and impact.

Exploitation: poc · Automatable: yes · Technical Impact: totalcoordinatorcisa_ssvcUS

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-119USCWE-125USCWE-125USCWE-787USCWE-787US

exploits (3)

Public proof-of-concept and weaponised exploit code.

SneakyNachos/CVE-2024-29943-but-with-wasmCVE-2024-29943, but with wasmPoC · poc_in_github
bjrjk/CVE-2024-29943A Pwn2Own 2024 SpiderMonkey JIT Bug: From Integer Range Inconsistency to Bound Check Elimination then RCEPoC · poc_in_github
seadragnol/CVE-2024-29943Reproducing CVE-2024-29943 for Windows, based on https://github.com/bjrjk/CVE-2024-29943PoC · poc_in_github

affected products (25)

Products and version ranges known to be affected.

Amazon Linux 2all versionscert_bundDEcpe:/o:amazon:linux_2:-
Debian Linuxall versionscert_bundDEcpe:/o:debian:debian_linux:-
Fedora Linuxall versionscert_bundDEcpe:/o:fedoraproject:fedora:-
Gentoo Linuxall versionscert_bundDEcpe:/o:gentoo:linux:-
IGEL OS 11all versionscert_bundDEcpe:/o:igel:os:11
IGEL OS 12all versionscert_bundDEcpe:/o:igel:os:12
Mozilla Firefox <124.0.1all versionscert_bundDE
Mozilla Firefox ESR <115.9.1all versionscert_bundDE
Oracle Linuxall versionscert_bundDEcpe:/o:oracle:linux:-
RESF Rocky Linuxall versionscert_bundDEcpe:/o:resf:rocky_linux:-
Red Hat Enterprise Linuxall versionscert_bundDEcpe:/o:redhat:enterprise_linux:-
SUSE Linuxall versionscert_bundDEcpe:/o:suse:suse_linux:-
SUSE openSUSEall versionscert_bundDEcpe:/o:suse:opensuse:-
Ubuntu Linuxall versionscert_bundDEcpe:/o:canonical:ubuntu_linux:-
Mozilla Firefox< 124.0.1cert_bundDE
Mozilla Firefox ESR< 115.9.1cert_bundDE
Mozilla Firefoxall versionsenisa_euvdEU
Mozilla Firefoxunspecified → 124.0.1enisa_euvdEU
Canonical Ltd. Ubuntu≤ 20.04 LTSfstec_bduRU
Mozilla Corp. Firefox≤ 124.0.1fstec_bduRU

showing 20 of 25

advisories (1)

Vendor and ecosystem advisories describing this.

WID-SEC-W-2024-0703Mozilla Firefox und Firefox ESR: Mehrere Schwachstellen ermöglichen CodeausführungDeutsch2024-03-24csaf · cert_bundDE
Ein entfernter, anonymer Angreifer kann mehrere Schwachstellen in Mozilla Firefox und Mozilla Firefox ESR ausnutzen, um beliebigen Programmcode auszuführen.

also known as (5)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd fstec_bdu cert_bund NVD CVE.org MITRE

published 2024-03-22modified 2026-06-17

references (12)

External citations — patches, advisories, analysis.

scry

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