Is CVE-2024-7520 in the CISA KEV catalog?

No. CVE-2024-7520 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2024-7520?

CVE-2024-7520 has a CVSS v3 base score of 8.8 (HIGH).

What is the EPSS score for CVE-2024-7520?

CVE-2024-7520 has an EPSS score of 0.60% (44th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2024-7520?

Upgrade firefox on debian unstable to 129.0-1 or later. Fixes are available for 20 affected products.

CVE & CISA-KEV Catalog

CVE-2024-7520

HIGH

8.8

CVSS v3

NVD

Description

A type confusion bug in WebAssembly could be leveraged by an attacker to potentially achieve code execution. This vulnerability affects Firefox < 129, Firefox ESR < 128.1, and Thunderbird < 128.1.

CWE-843Type Confusion CWE-94Code Injection

How to fix

Remediation Available

firefoxDebian

Fixed in:129.0-1CVE-2024-7520

firefoxRed Hat / RHEL

Fixed in:0:115.14.0-2.el7_9RHSA-2024:5324

Fixed in:0:115.14.0-2.el7_9.ppc64RHSA-2024:5324

Fixed in:0:115.14.0-2.el7_9RHSA-2024:5324

Fixed in:0:115.14.0-2.el8_4RHSA-2024:5325

Fixed in:0:115.14.0-2.el8_8RHSA-2024:5329

Fixed in:0:115.14.0-2.el8_10RHSA-2024:5391

Fixed in:0:115.14.0-2.el8_6RHSA-2024:5326

Fixed in:0:115.14.0-2.el8_2RHSA-2024:5323

Fixed in:0:115.14.0-2.el8_8RHSA-2024:5329

Fixed in:0:115.14.0-2.el8_6RHSA-2024:5326

Fixed in:0:115.14.0-2.el8_4RHSA-2024:5325

Fixed in:0:115.14.0-2.el8_10RHSA-2024:5391

Fixed in:0:115.14.0-2.el8_6RHSA-2024:5326

Fixed in:0:115.14.0-2.el8_10RHSA-2024:5391

Fixed in:0:115.14.0-2.el8_4RHSA-2024:5325

Fixed in:0:115.14.0-2.el8_8RHSA-2024:5329

Fixed in:0:115.14.0-2.el9_4RHSA-2024:5322

Fixed in:0:115.14.0-2.el9_2RHSA-2024:5328

Fixed in:0:115.14.0-2.el9_0RHSA-2024:5327

Fixed in:0:115.14.0-2.el9_4RHSA-2024:5322

firefoxRocky

Fixed in:0:115.14.0-2.el7_9RHSA-2024:5324

Fixed in:0:115.14.0-2.el7_9.ppc64RHSA-2024:5324

Fixed in:0:115.14.0-2.el8_8RHSA-2024:5329

Fixed in:0:115.14.0-2.el8_4RHSA-2024:5325

Fixed in:0:115.14.0-2.el8_8RHSA-2024:5329

Fixed in:0:115.14.0-2.el8_6RHSA-2024:5326

Fixed in:0:115.14.0-2.el8_2RHSA-2024:5323

Fixed in:0:115.14.0-2.el8_4RHSA-2024:5325

Fixed in:0:115.14.0-2.el8_6RHSA-2024:5326

Fixed in:0:115.14.0-2.el8_10RHSA-2024:5391

Fixed in:0:115.14.0-2.el8_6RHSA-2024:5326

Fixed in:0:115.14.0-2.el8_10RHSA-2024:5391

Fixed in:0:115.14.0-2.el8_8RHSA-2024:5329

Fixed in:0:115.14.0-2.el8_10RHSA-2024:5391

Fixed in:0:115.14.0-2.el8_4RHSA-2024:5325

Fixed in:0:115.14.0-2.el8_10RHSA-2024:5391

Fixed in:0:115.14.0-2.el8_6RHSA-2024:5326

Fixed in:0:115.14.0-2.el8_8RHSA-2024:5329

Fixed in:0:115.14.0-2.el9_0RHSA-2024:5327

Fixed in:0:115.14.0-2.el9_4RHSA-2024:5322

Fixed in:0:115.14.0-2.el9_2RHSA-2024:5328

Fixed in:0:115.14.0-2.el9_4RHSA-2024:5322

Fixed in:0:115.14.0-2.el9_0RHSA-2024:5327

Fixed in:0:115.14.0-2.el9_4RHSA-2024:5322

Fixed in:0:115.14.0-2.el9_2RHSA-2024:5328

Fixed in:0:115.14.0-2.el9_4RHSA-2024:5322

Fixed in:0:115.14.0-2.el9_2RHSA-2024:5328

Fixed in:0:115.14.0-2.el9_0RHSA-2024:5327

firefox-debuginfoRocky

Fixed in:0:115.14.0-2.el7_9.ppc64RHSA-2024:5324

Fixed in:0:115.14.0-2.el7_9RHSA-2024:5324

Fixed in:0:115.14.0-2.el8_6RHSA-2024:5326

Fixed in:0:115.14.0-2.el8_2RHSA-2024:5323

Fixed in:0:115.14.0-2.el8_10RHSA-2024:5391

Fixed in:0:115.14.0-2.el8_8RHSA-2024:5329

Fixed in:0:115.14.0-2.el8_6RHSA-2024:5326

Fixed in:0:115.14.0-2.el8_4RHSA-2024:5325

Fixed in:0:115.14.0-2.el9_4RHSA-2024:5322

Fixed in:0:115.14.0-2.el9_0RHSA-2024:5327

Fixed in:0:115.14.0-2.el9_2RHSA-2024:5328

Fixed in:0:115.14.0-2.el9_0RHSA-2024:5327

Fixed in:0:115.14.0-2.el9_2RHSA-2024:5328

Fixed in:0:115.14.0-2.el9_0RHSA-2024:5327

Fixed in:0:115.14.0-2.el9_2RHSA-2024:5328

Fixed in:0:115.14.0-2.el9_4RHSA-2024:5322

firefox-debuginfoRed Hat / RHEL

Fixed in:0:115.14.0-2.el7_9RHSA-2024:5324

Fixed in:0:115.14.0-2.el7_9.ppc64RHSA-2024:5324

Fixed in:0:115.14.0-2.el7_9RHSA-2024:5324

Fixed in:0:115.14.0-2.el8_6RHSA-2024:5326

Fixed in:0:115.14.0-2.el8_4RHSA-2024:5325

Fixed in:0:115.14.0-2.el8_2RHSA-2024:5323

Fixed in:0:115.14.0-2.el8_10RHSA-2024:5391

Fixed in:0:115.14.0-2.el8_8RHSA-2024:5329

Fixed in:0:115.14.0-2.el8_10RHSA-2024:5391

Fixed in:0:115.14.0-2.el8_4RHSA-2024:5325

Fixed in:0:115.14.0-2.el8_6RHSA-2024:5326

Fixed in:0:115.14.0-2.el9_4RHSA-2024:5322

Fixed in:0:115.14.0-2.el9_0RHSA-2024:5327

Fixed in:0:115.14.0-2.el9_2RHSA-2024:5328

firefox-debugsourceRocky

Fixed in:0:115.14.0-2.el8_8RHSA-2024:5329

Fixed in:0:115.14.0-2.el8_2RHSA-2024:5323

Fixed in:0:115.14.0-2.el8_8RHSA-2024:5329

Fixed in:0:115.14.0-2.el8_6RHSA-2024:5326

Fixed in:0:115.14.0-2.el8_8RHSA-2024:5329

Fixed in:0:115.14.0-2.el8_4RHSA-2024:5325

Fixed in:0:115.14.0-2.el8_8RHSA-2024:5329

Fixed in:0:115.14.0-2.el8_6RHSA-2024:5326

Fixed in:0:115.14.0-2.el8_10RHSA-2024:5391

Fixed in:0:115.14.0-2.el8_6RHSA-2024:5326

Fixed in:0:115.14.0-2.el8_10RHSA-2024:5391

Fixed in:0:115.14.0-2.el8_4RHSA-2024:5325

Fixed in:0:115.14.0-2.el8_10RHSA-2024:5391

Fixed in:0:115.14.0-2.el9_0RHSA-2024:5327

Fixed in:0:115.14.0-2.el9_4RHSA-2024:5322

Fixed in:0:115.14.0-2.el9_2RHSA-2024:5328

firefox-debugsourceRed Hat / RHEL

Fixed in:0:115.14.0-2.el8_6RHSA-2024:5326

Fixed in:0:115.14.0-2.el8_8RHSA-2024:5329

Fixed in:0:115.14.0-2.el8_4RHSA-2024:5325

Fixed in:0:115.14.0-2.el8_8RHSA-2024:5329

Fixed in:0:115.14.0-2.el8_6RHSA-2024:5326

Fixed in:0:115.14.0-2.el8_8RHSA-2024:5329

Fixed in:0:115.14.0-2.el8_10RHSA-2024:5391

Fixed in:0:115.14.0-2.el8_6RHSA-2024:5326

Fixed in:0:115.14.0-2.el8_10RHSA-2024:5391

Fixed in:0:115.14.0-2.el8_6RHSA-2024:5326

Fixed in:0:115.14.0-2.el8_4RHSA-2024:5325

Fixed in:0:115.14.0-2.el8_10RHSA-2024:5391

Fixed in:0:115.14.0-2.el8_2RHSA-2024:5323

Fixed in:0:115.14.0-2.el9_2RHSA-2024:5328

Fixed in:0:115.14.0-2.el9_0RHSA-2024:5327

Fixed in:0:115.14.0-2.el9_4RHSA-2024:5322

Fixed in:0:115.14.0-2.el9_2RHSA-2024:5328

firefox-x11Red Hat / RHEL

Fixed in:0:115.14.0-2.el9_2RHSA-2024:5328

Fixed in:0:115.14.0-2.el9_4RHSA-2024:5322

Fixed in:0:115.14.0-2.el9_2RHSA-2024:5328

Fixed in:0:115.14.0-2.el9_4RHSA-2024:5322

firefox-x11Rocky

Fixed in:0:115.14.0-2.el9_2RHSA-2024:5328

Fixed in:0:115.14.0-2.el9_4RHSA-2024:5322

Fixed in:0:115.14.0-2.el9_2RHSA-2024:5328

Fixed in:0:115.14.0-2.el9_4RHSA-2024:5322

Fixed in:0:115.14.0-2.el9_2RHSA-2024:5328

Fixed in:0:115.14.0-2.el9_4RHSA-2024:5322

thunderbirdRed Hat / RHEL

Fixed in:0:115.14.0-1.el8_8RHSA-2024:5394

Fixed in:0:115.14.0-1.el8_10RHSA-2024:5402

Fixed in:0:115.14.0-1.el8_8RHSA-2024:5394

Fixed in:0:115.14.0-1.el8_4RHSA-2024:5527

Fixed in:0:115.14.0-1.el8_10RHSA-2024:5402

Fixed in:0:115.14.0-1.el8_6RHSA-2024:5528

Fixed in:0:115.14.0-1.el8_4RHSA-2024:5527

Fixed in:0:115.14.0-1.el8_2RHSA-2024:5393

Fixed in:0:115.14.0-1.el8_6RHSA-2024:5528

Fixed in:0:115.14.0-1.el8_10RHSA-2024:5402

Fixed in:0:115.14.0-1.el8_2RHSA-2024:5393

Fixed in:0:115.14.0-1.el8_6RHSA-2024:5528

Fixed in:0:115.14.0-1.el8_8RHSA-2024:5394

Fixed in:0:115.14.0-1.el8_6RHSA-2024:5528

Fixed in:0:115.14.0-1.el9_0RHSA-2024:5395

Fixed in:0:115.14.0-1.el9_4RHSA-2024:5392

Fixed in:0:115.14.0-1.el9_2RHSA-2024:5396

Fixed in:0:115.14.0-1.el9_0RHSA-2024:5395

Fixed in:0:115.14.0-1.el9_2RHSA-2024:5396

Fixed in:0:115.14.0-1.el9_0RHSA-2024:5395

Fixed in:0:115.14.0-1.el9_2RHSA-2024:5396

thunderbirdRocky

Fixed in:0:115.14.0-1.el8_6RHSA-2024:5528

Fixed in:0:115.14.0-1.el8_4RHSA-2024:5527

Fixed in:0:115.14.0-1.el8_8RHSA-2024:5394

Fixed in:0:115.14.0-1.el8_4RHSA-2024:5527

Fixed in:0:115.14.0-1.el8_2RHSA-2024:5393

Fixed in:0:115.14.0-1.el8_6RHSA-2024:5528

Fixed in:0:115.14.0-1.el8_8RHSA-2024:5394

Fixed in:0:115.14.0-1.el8_6RHSA-2024:5528

Fixed in:0:115.14.0-1.el8_10RHSA-2024:5402

Fixed in:0:115.14.0-1.el8_2RHSA-2024:5393

Fixed in:0:115.14.0-1.el8_8RHSA-2024:5394

Fixed in:0:115.14.0-1.el8_10RHSA-2024:5402

Fixed in:0:115.14.0-1.el8_6RHSA-2024:5528

Fixed in:0:115.14.0-1.el9_4RHSA-2024:5392

Fixed in:0:115.14.0-1.el9_0RHSA-2024:5395

Fixed in:0:115.14.0-1.el9_2RHSA-2024:5396

thunderbird-debuginfoRed Hat / RHEL

Fixed in:0:115.14.0-1.el8_4RHSA-2024:5527

Fixed in:0:115.14.0-1.el8_6RHSA-2024:5528

Fixed in:0:115.14.0-1.el8_2RHSA-2024:5393

Fixed in:0:115.14.0-1.el8_6RHSA-2024:5528

Fixed in:0:115.14.0-1.el8_8RHSA-2024:5394

Fixed in:0:115.14.0-1.el8_10RHSA-2024:5402

Fixed in:0:115.14.0-1.el8_4RHSA-2024:5527

Fixed in:0:115.14.0-1.el8_10RHSA-2024:5402

Fixed in:0:115.14.0-1.el9_4RHSA-2024:5392

Fixed in:0:115.14.0-1.el9_2RHSA-2024:5396

Fixed in:0:115.14.0-1.el9_0RHSA-2024:5395

Fixed in:0:115.14.0-1.el9_4RHSA-2024:5392

Fixed in:0:115.14.0-1.el9_0RHSA-2024:5395

Fixed in:0:115.14.0-1.el9_2RHSA-2024:5396

thunderbird-debuginfoRocky

Fixed in:0:115.14.0-1.el8_8RHSA-2024:5394

Fixed in:0:115.14.0-1.el8_10RHSA-2024:5402

Fixed in:0:115.14.0-1.el8_4RHSA-2024:5527

Fixed in:0:115.14.0-1.el8_6RHSA-2024:5528

Fixed in:0:115.14.0-1.el8_2RHSA-2024:5393

Fixed in:0:115.14.0-1.el8_6RHSA-2024:5528

Fixed in:0:115.14.0-1.el9_2RHSA-2024:5396

Fixed in:0:115.14.0-1.el9_0RHSA-2024:5395

Fixed in:0:115.14.0-1.el9_4RHSA-2024:5392

thunderbird-debugsourceRocky

Fixed in:0:115.14.0-1.el8_6RHSA-2024:5528

Fixed in:0:115.14.0-1.el8_10RHSA-2024:5402

Fixed in:0:115.14.0-1.el8_8RHSA-2024:5394

Fixed in:0:115.14.0-1.el8_10RHSA-2024:5402

Fixed in:0:115.14.0-1.el8_6RHSA-2024:5528

Fixed in:0:115.14.0-1.el8_8RHSA-2024:5394

Fixed in:0:115.14.0-1.el8_6RHSA-2024:5528

Fixed in:0:115.14.0-1.el8_2RHSA-2024:5393

Fixed in:0:115.14.0-1.el8_4RHSA-2024:5527

Fixed in:0:115.14.0-1.el8_6RHSA-2024:5528

Fixed in:0:115.14.0-1.el8_8RHSA-2024:5394

Fixed in:0:115.14.0-1.el8_10RHSA-2024:5402

Fixed in:0:115.14.0-1.el9_2RHSA-2024:5396

Fixed in:0:115.14.0-1.el9_0RHSA-2024:5395

Fixed in:0:115.14.0-1.el9_4RHSA-2024:5392

Fixed in:0:115.14.0-1.el9_2RHSA-2024:5396

Fixed in:0:115.14.0-1.el9_4RHSA-2024:5392

Fixed in:0:115.14.0-1.el9_0RHSA-2024:5395

Fixed in:0:115.14.0-1.el9_2RHSA-2024:5396

Fixed in:0:115.14.0-1.el9_4RHSA-2024:5392

thunderbird-debugsourceRed Hat / RHEL

Fixed in:0:115.14.0-1.el8_6RHSA-2024:5528

Fixed in:0:115.14.0-1.el8_10RHSA-2024:5402

Fixed in:0:115.14.0-1.el8_6RHSA-2024:5528

Fixed in:0:115.14.0-1.el8_10RHSA-2024:5402

Fixed in:0:115.14.0-1.el8_8RHSA-2024:5394

Fixed in:0:115.14.0-1.el8_10RHSA-2024:5402

Fixed in:0:115.14.0-1.el8_8RHSA-2024:5394

Fixed in:0:115.14.0-1.el8_4RHSA-2024:5527

Fixed in:0:115.14.0-1.el8_6RHSA-2024:5528

Fixed in:0:115.14.0-1.el8_4RHSA-2024:5527

Fixed in:0:115.14.0-1.el8_2RHSA-2024:5393

Fixed in:0:115.14.0-1.el8_8RHSA-2024:5394

Fixed in:0:115.14.0-1.el8_6RHSA-2024:5528

Fixed in:0:115.14.0-1.el8_10RHSA-2024:5402

Fixed in:0:115.14.0-1.el8_8RHSA-2024:5394

Fixed in:0:115.14.0-1.el9_2RHSA-2024:5396

Fixed in:0:115.14.0-1.el9_0RHSA-2024:5395

Fixed in:0:115.14.0-1.el9_4RHSA-2024:5392

Fixed in:0:115.14.0-1.el9_0RHSA-2024:5395

Fixed in:0:115.14.0-1.el9_4RHSA-2024:5392

Fixed in:0:115.14.0-1.el9_0RHSA-2024:5395

Fixed in:0:115.14.0-1.el9_2RHSA-2024:5396

Fixed in:0:115.14.0-1.el9_4RHSA-2024:5392

Fixed in:0:115.14.0-1.el9_2RHSA-2024:5396

Fixed in:0:115.14.0-1.el9_0RHSA-2024:5395

Fixed in:0:115.14.0-1.el9_2RHSA-2024:5396

firefoxUbuntu

Fixed in:129.0.1+build1-0ubuntu0.20.04.1USN-6966-1

DeveloperEditionWindows application

Affected:129.0Fixed in:129.0Mozilla

Mozilla Firefox (en-US)Windows application

Affected:129.0Fixed in:129.0Mozilla

Mozilla Firefox ESR (en-US)Windows application

Affected:128.1.0Fixed in:128.1.0Mozilla

Mozilla Thunderbird (en-US)Windows application

Affected:128.1.0Fixed in:128.1.0Mozilla

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 VectorNetwork

Attack ComplexityLow

Privileges RequiredNone

User InteractionRequired

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityHigh

AvailabilityHigh

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

Exploit Intelligence

0.60%probability of exploitation in 30 days

44thpercentile

Moderate risk: more likely to be exploited than 44% of all known CVEs.

References

Vendor Advisory3

Issue Tracking1

bugzilla.mozilla.org

Related Vulnerabilities

Other CWE-843 (Type Confusion) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2011-0611	High	8.8	99%	KEV	Fix
CVE-2012-0507	Critical	9.8	98%	KEV + Ransom	-
CVE-2017-8291	High	7.8	97%	KEV	Fix
CVE-2019-0752	High	7.5	82%	KEV + Ransom	-
CVE-2017-0037	High	8.1	80%	KEV	-
CVE-2016-7201	High	8.8	80%	KEV	-

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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 2025-03-24.