CVE-2024-4367

80

FAUCET Score

CVE-2024-4367 is a critical vulnerability in PDF.js, affecting Firefox, Firefox ESR, and Thunderbird, where a missing type check allows arbitrary JavaScript execution within the PDF.js context. With a CVSS score of 8.8 (HIGH), this vulnerability has a low attack complexity and can lead to high impact on confidentiality, integrity, and availability if a user is tricked into opening a malicious PDF. While not listed on the KEV catalog, an exploit (EDB-52273) is publicly available, and the vulnerability has garnered significant community discussion and media coverage, indicating a high potential for exploitation.

Impacted Technologies

Vendor	Product	Version(s)	CPE
		< 115.11.0CPE matchmatch criteria	cpe:2.3:a:mozilla:firefox:::::esr:::*
		< 126.0CPE matchmatch criteria	cpe:2.3:a:mozilla:firefox:::::-:::*
		< 115.11.0CPE matchmatch criteria	cpe:2.3:a:mozilla:thunderbird::::::::
		10.0CPE matchmatch criteria	cpe:2.3:o:debian:debian_linux:10.0:::::::*
		< 7.10.6CPE matchmatch criteria	cpe:2.3:a:open-xchange:open-xchange_appsuite_frontend::::::::

CVSS Data

CVSS version used by this source: 3.1

8.8HIGH

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

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

REQUIRED

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

Exploitability Score

2.8

Impact Score

5.9

CvssVersion

3.1

Exploit Intelligence

EPSS Score

72.65%

Probability of exploitation in next 30 days

EPSS Percentile

99.4%

Percentile rank of EPSS score among Peer Group

As of 2026-07-24

Model: v2026.06.15

ExploitDB: EDB-52273 · Apr 22, 2025

This CVE's current EPSS score of 0.7265 is in the 100th percentile among its peer group of 14,824 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.2 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.

Media Mentions

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.1 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (24)

npmpatch availablevia ghsa

Product: pdfjs-distFixed in: 4.2.67

redhatpatch availablevia redhat_api

Product: Red Hat Enterprise Linux 7Fixed in: firefox-0:115.11.0-1.el7_9

redhatpatch availablevia redhat_api

Product: Red Hat Enterprise Linux 7Fixed in: thunderbird-0:115.11.0-1.el7_9

redhatpatch availablevia redhat_api

Product: Red Hat Enterprise Linux 8Fixed in: firefox-0:115.11.0-1.el8_10

redhatpatch availablevia redhat_api

Product: Red Hat Enterprise Linux 8Fixed in: thunderbird-0:115.11.0-1.el8_10

redhatpatch availablevia redhat_api

Product: Red Hat Enterprise Linux 8.2 Advanced Update SupportFixed in: firefox-0:115.11.0-1.el8_2

redhatpatch availablevia redhat_api

Product: Red Hat Enterprise Linux 8.2 Advanced Update SupportFixed in: thunderbird-0:115.11.0-1.el8_2

redhatpatch availablevia redhat_api

Product: Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update SupportFixed in: firefox-0:115.11.0-1.el8_4

redhatpatch availablevia redhat_api

Product: Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update SupportFixed in: thunderbird-0:115.11.0-1.el8_4

redhatpatch availablevia redhat_api

Product: Red Hat Enterprise Linux 8.4 Telecommunications Update ServiceFixed in: firefox-0:115.11.0-1.el8_4

redhatpatch availablevia redhat_api

Product: Red Hat Enterprise Linux 8.4 Telecommunications Update ServiceFixed in: thunderbird-0:115.11.0-1.el8_4

redhatpatch availablevia redhat_api

Product: Red Hat Enterprise Linux 8.4 Update Services for SAP SolutionsFixed in: firefox-0:115.11.0-1.el8_4

redhatpatch availablevia redhat_api

Product: Red Hat Enterprise Linux 8.4 Update Services for SAP SolutionsFixed in: thunderbird-0:115.11.0-1.el8_4

redhatpatch availablevia redhat_api

Product: Red Hat Enterprise Linux 8.6 Extended Update SupportFixed in: firefox-0:115.11.0-1.el8_6

redhatpatch availablevia redhat_api

Product: Red Hat Enterprise Linux 8.6 Extended Update SupportFixed in: thunderbird-0:115.11.0-1.el8_6

redhatpatch availablevia redhat_api

Product: Red Hat Enterprise Linux 8.8 Extended Update SupportFixed in: firefox-0:115.11.0-1.el8_8

redhatpatch availablevia redhat_api

Product: Red Hat Enterprise Linux 8.8 Extended Update SupportFixed in: thunderbird-0:115.11.0-1.el8_8

redhatpatch availablevia redhat_api

Product: Red Hat Enterprise Linux 9Fixed in: firefox-0:115.11.0-1.el9_4

redhatpatch availablevia redhat_api

Product: Red Hat Enterprise Linux 9Fixed in: thunderbird-0:115.11.0-1.el9_4

redhatpatch availablevia redhat_api

Product: Red Hat Enterprise Linux 9.0 Extended Update SupportFixed in: firefox-0:115.11.0-1.el9_0

redhatpatch availablevia redhat_api

Product: Red Hat Enterprise Linux 9.0 Extended Update SupportFixed in: thunderbird-0:115.11.0-1.el9_0

redhatpatch availablevia redhat_api

Product: Red Hat Enterprise Linux 9.2 Extended Update SupportFixed in: thunderbird-0:115.11.0-1.el9_2

redhatpatch availablevia redhat_api

Product: Red Hat Enterprise Linux 9.2 Extended Update SupportFixed in: firefox-0:115.11.0-1.el9_2

mozillavendor investigatingvia nvd_reference

Vendor Advisories (2)

redhatCVE-2024-4367Important

Mozilla: Arbitrary JavaScript execution in PDF.js

npmGHSA-wgrm-67xf-hhpqhigh

PDF.js vulnerable to arbitrary JavaScript execution upon opening a malicious PDF

References

cert-portal.siemens.com / productcert/html/ssa-827383.html

codeanlabs.com / blog/research/cve-2024-4367-arbitrary-js-execution-in-pdf-js

seclists.org / fulldisclosure/2024/Aug/30

Mailing List

github.com / gogs/gogs/issues/7928

github.com / mozilla/pdf.js/releases/tag/v4.2.67

exploit-db.com / exploits/52273

bugzilla.mozilla.org / show_bug.cgi

Issue Tracking

lists.debian.org / debian-lts-announce/2024/05/msg00010.html

Mailing List

lists.debian.org / debian-lts-announce/2024/05/msg00012.html

Mailing List

mozilla.org / security/advisories/mfsa2024-21

Vendor Advisory

mozilla.org / security/advisories/mfsa2024-22

Vendor Advisory

mozilla.org / security/advisories/mfsa2024-23

Vendor Advisory