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CVE-2024-7652· NVD / CVE Program· CNA mozilla

Type Confusion in Async Generators in Javascript Engine

Noroxi assessment

Priority: Monitor (action score 30/100)

  • The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
  • Probability of exploitation in the next 30 days: 0.65% (FIRST EPSS); higher than 50.3% of all records.
  • Anyone who can reach it over the internet can trigger it. No account or password is required. No user action is required. No special conditions are required; it is repeatable.
  • According to CISA the attack is automatable: targets can be found by mass scanning.
  • Fixed version: firefox (AlmaLinux:8) 128.2.0-1.el8_10.alma.1; thunderbird (AlmaLinux:8) 128.2.0-1.el8_10.alma.1; firefox (AlmaLinux:9) 128.2.0-1.el9_4.alma.1.

Low priority for now. Upgrade to firefox (AlmaLinux:8) 128.2.0-1.el8_10.alma.1; thunderbird (AlmaLinux:8) 128.2.0-1.el8_10.alma.1; firefox (AlmaLinux:9) 128.2.0-1.el9_4.alma.1 or later.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · FIRST EPSS

An error in the ECMA-262 specification relating to Async Generators could have resulted in a type confusion, potentially leading to memory corruption and an exploitable crash. This vulnerability affects Firefox < 128, Firefox ESR < 115.13, Thunderbird < 115.13, and Thunderbird < 128.

HighCVSS 7.5 · v3.1—No exploit Fix available
Published
Sep 6, 2024
Updated
Jun 17, 2026
EPSS
0.6% · 50th percentile

Report tools

JSON

Action score

30

Monitor

Low priority for now.

CVSS
30 / 40 · 7.5 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.6%

CISA SSVC decision

Exploitation
none
Automatable
yes
Technical impact
partial

Vulnrichment: CISA's decision-tree inputs.

Get told when this record changes

  • Not in KEV: no record of exploitation in the wild
  • No public exploit code on record
  • A fix has been released

If any of these changes, we'll tell you in the daily email digest.

Follow CVE-2024-7652

When you'll hear from us

  • when it enters CISA KEV
  • when exploit code appears or is weaponized
  • when the record is updated (including a fixed version)
  • when EPSS rises 20 points in a week

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Noroxi analysis

What does it mean in your environment?

The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.

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Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

VendorProduct
mozillafirefox
mozillathunderbird

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

  • mozilla firefoxbefore 115.13.0
  • mozilla firefoxbefore 128.0
  • mozilla thunderbirdbefore 115.13.0
  • mozilla thunderbird116.0 and later · before 128.0

Versions reported by the vendor

Affected version ranges reported by the assigning authority (mozilla). Independent of NVD's CPE analysis and usually ahead of it.

  • Mozilla Firefox

    • unspecified and later · before 128affected

  • Mozilla Firefox ESR

    • unspecified and later · before 115.13affected

  • Mozilla Thunderbird

    • unspecified and later · before 115.13affected
    • unspecified and later · before 128affected

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

EcosystemPackageAffected rangeFix
AlmaLinux:8firefoxbefore 128.2.0-1.el8_10.alma.1128.2.0-1.el8_10.alma.1
AlmaLinux:8thunderbirdbefore 128.2.0-1.el8_10.alma.1128.2.0-1.el8_10.alma.1
AlmaLinux:9firefoxbefore 128.2.0-1.el9_4.alma.1128.2.0-1.el9_4.alma.1
AlmaLinux:9firefox-x11before 128.2.0-1.el9_4.alma.1128.2.0-1.el9_4.alma.1
AlmaLinux:9thunderbirdbefore 128.2.0-1.el9_4.alma.1128.2.0-1.el9_4.alma.1
Debian:11firefox-esrbefore 115.13.0esr-1~deb11u1115.13.0esr-1~deb11u1
Debian:11thunderbirdbefore 1:115.13.0-1~deb11u11:115.13.0-1~deb11u1
Debian:12firefox-esrbefore 115.13.0esr-1~deb12u1115.13.0esr-1~deb12u1
Debian:12thunderbirdbefore 1:115.13.0-1~deb12u11:115.13.0-1~deb12u1
Debian:13firefox-esrbefore 115.13.0esr-1115.13.0esr-1
Debian:13thunderbirdbefore 1:115.13.0-11:115.13.0-1
Red Hat:enterprise_linux:8::appstreamfirefoxbefore 0:128.2.0-1.el8_100:128.2.0-1.el8_10
Red Hat:enterprise_linux:8::appstreamfirefox-debuginfobefore 0:128.2.0-1.el8_100:128.2.0-1.el8_10
Red Hat:enterprise_linux:8::appstreamfirefox-debugsourcebefore 0:128.2.0-1.el8_100:128.2.0-1.el8_10
Red Hat:enterprise_linux:8::appstreamthunderbirdbefore 0:128.2.0-1.el8_100:128.2.0-1.el8_10
Red Hat:enterprise_linux:8::appstreamthunderbird-debuginfobefore 0:128.2.0-1.el8_100:128.2.0-1.el8_10
Red Hat:enterprise_linux:8::appstreamthunderbird-debugsourcebefore 0:128.2.0-1.el8_100:128.2.0-1.el8_10
Red Hat:enterprise_linux:9::appstreamfirefoxbefore 0:128.2.0-1.el9_40:128.2.0-1.el9_4
Red Hat:enterprise_linux:9::appstreamfirefox-debuginfobefore 0:128.2.0-1.el9_40:128.2.0-1.el9_4
Red Hat:enterprise_linux:9::appstreamfirefox-debugsourcebefore 0:128.2.0-1.el9_40:128.2.0-1.el9_4
Red Hat:enterprise_linux:9::appstreamfirefox-x11before 0:128.2.0-1.el9_40:128.2.0-1.el9_4
Red Hat:enterprise_linux:9::appstreamthunderbirdbefore 0:128.2.0-1.el9_40:128.2.0-1.el9_4
Red Hat:enterprise_linux:9::appstreamthunderbird-debuginfobefore 0:128.2.0-1.el9_40:128.2.0-1.el9_4
Red Hat:enterprise_linux:9::appstreamthunderbird-debugsourcebefore 0:128.2.0-1.el9_40:128.2.0-1.el9_4

+30

Same product

mozilla: all records

Other highest-scoring records for the same primary product.

  • CVE-2010-3765Mozilla Firefox 3.5.x through 3.5.14 and 3.6.x through 3.6.11, Thunderbird 3.1.6 before 3.1.6 and 3.0.x before 3.0.10, and SeaMonkey 2.x befKEV
    94Now
  • CVE-2019-11708Insufficient vetting of parameters passed with the Prompt:Open IPC message between child and parent processes can result in the non-sandboxeKEV
    87Now
  • CVE-2015-4495The PDF reader in Mozilla Firefox before 39.0.3, Firefox ESR 38.x before 38.1.1, and Firefox OS before 2.2 allows remote attackers to bypassKEV
    86Now

Published before and after this one in the same product

  • ← EarlierCVE-2024-8388Sep 3, 2024 · Multiple prompts and panels from both Firefox and the Android OS could be used to obscure the notification announcing the transition to full
    21Monitor
  • ← EarlierCVE-2024-8389Sep 3, 2024 · Memory safety bugs present in Firefox 129.
    39Monitor
  • Later →CVE-2024-8897Sep 17, 2024 · Under certain conditions, an attacker with the ability to redirect users to a malicious site via an open redirect on a trusted site, may be
    26Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

Product / packageFixed versionSource
almalinux:firefox128.2.0-1.el9_4.alma.1 · AlmaLinux:9Package registry (OSV)
almalinux:firefox-x11128.2.0-1.el9_4.alma.1 · AlmaLinux:9Package registry (OSV)
almalinux:thunderbird128.2.0-1.el9_4.alma.1 · AlmaLinux:9Package registry (OSV)
debian:firefox-esr115.13.0esr-1~deb12u1 · Debian:12Package registry (OSV)
debian:thunderbird1:115.13.0-1~deb12u1 · Debian:12Package registry (OSV)
red hat:firefox0:128.2.0-1.el9_4 · Red Hat:enterprise_linux:9::appstreamPackage registry (OSV)
red hat:firefox-debuginfo0:128.2.0-1.el9_4 · Red Hat:enterprise_linux:9::appstreamPackage registry (OSV)
red hat:firefox-debugsource0:128.2.0-1.el9_4 · Red Hat:enterprise_linux:9::appstreamPackage registry (OSV)
red hat:firefox-x110:128.2.0-1.el9_4 · Red Hat:enterprise_linux:9::appstreamPackage registry (OSV)
red hat:thunderbird0:128.2.0-1.el9_4 · Red Hat:enterprise_linux:9::appstreamPackage registry (OSV)
red hat:thunderbird-debuginfo0:128.2.0-1.el9_4 · Red Hat:enterprise_linux:9::appstreamPackage registry (OSV)
red hat:thunderbird-debugsource0:128.2.0-1.el9_4 · Red Hat:enterprise_linux:9::appstreamPackage registry (OSV)
rocky linux:firefox0:128.2.0-1.el9_4.0.1 · Rocky Linux:9Package registry (OSV)
rocky linux:thunderbird0:128.2.0-1.el9_4.0.1 · Rocky Linux:9Package registry (OSV)

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

EPSS, last 120 days

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

No commit or PR link among the references.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

  • CVE-2024-1170581 days apart`NSC_DeriveKey` inadvertently assumed that the `phKey` parameter is always non-NULL.
    36Monitor
  • CVE-2023-29539462 days apartWhen handling the filename directive in the Content-Disposition header, the filename would be truncated if the filename contained a NULL cha
    35Monitor
  • CVE-2024-3858143 days apartIt was possible to mutate a JavaScript object so that the JIT could crash while tracing it.
    30Monitor
  • CVE-2024-1170681 days apartA null pointer dereference may have inadvertently occurred in `pk12util`, and specifically in the `SEC_ASN1DecodeItem_Util` function, when h
    26Monitor
  • CVE-2025-8033319 days apartIncorrect JavaScript state machine for generators
    26Monitor
  • CVE-2023-37456422 days apartThe session restore helper crashed whenever there was no parameter sent to the message handler.
    26Monitor

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

—

Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

Technical details

Attack conditions

  • Anyone who can reach it over the internet can trigger it.
  • No account or password is required.
  • No user action is required.
  • No special conditions are required; it is repeatable.

If successful

Confidentiality
none
Integrity
none
Availability
high · the service can be disrupted
Attack vector
Network
Attack complexity
Low
Privileges required
None
User interaction
None
Scope
Unchanged
Confidentiality impact
None
Integrity impact
None
Availability impact
High

Weakness class (CWE)

CWE-476 · NULL Pointer Dereference

CVSS vector

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

nvd-secondary

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

MITRE has no CAPEC/ATT&CK mapping for this CWE.

Change log

  1. Fix✗ → ✓

For records you follow, these changes also arrive as notifications. →

References

Show all references (5 more)

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records