CVE-2026-7322

April 28, 2026, 10:16 p.m.

7.3
High

Description

Memory safety bugs present in Firefox ESR 115.35.0, Firefox ESR 140.10.0 and Firefox 150.0.0. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code. This vulnerability was fixed in Firefox 150.0.1, Firefox ESR 140.10.1, and Firefox ESR 115.35.1.

Product(s) Impacted

Vendor Product Versions
Mozilla
  • Firefox
  • Thunderbird
  • 115.35.0, 140.10.0, 150.0.0
  • 140.10.0, 150.0.0

Weaknesses

Common security weaknesses mapped to this vulnerability.

CWE-119
Improper Restriction of Operations within the Bounds of a Memory Buffer
The product performs operations on a memory buffer, but it can read from or write to a memory location that is outside of the intended boundary of the buffer.

*CPE(s)

Affected systems and software identified for this CVE.

Type Vendor Product Version Update Edition Language Software Edition Target Software Target Hardware Other Information
a mozilla firefox 115.35.0 / / / / / / /
a mozilla firefox 140.10.0 / / / / / / /
a mozilla thunderbird 140.10.0 / / / / / / /
a mozilla firefox 150.0.0 / / / / / / /
a mozilla thunderbird 150.0.0 / / / / / / /

References

https://bugzilla.mozilla.org/buglist.cgi?bug_id=2021904%2C2022731%2C2027158%2C2027733%2C2027973%2C2027976%2C2028231%2C2028731%2C2028886%2C2029067%2C2029700%2C2029724%2C2029806%2C2029814%2C2030108%2C2030111%2C2031524%2C2031921%2C2032040
https://www.mozilla.org/security/advisories/mfsa2026-35/
https://www.mozilla.org/security/advisories/mfsa2026-36/
https://www.mozilla.org/security/advisories/mfsa2026-37/

Tags

CWE-119
[email protected]
2026-04-28
CVE-2026-7322

CVSS Score

7.3 / 10

CVSS Data - 3.1

  • Attack Vector: NETWORK
  • Attack Complexity: LOW
  • Privileges Required: NONE
  • Scope: UNCHANGED
  • Confidentiality Impact: LOW
  • Integrity Impact: LOW
  • Availability Impact: LOW

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

    View Vector String

Timeline

Published: April 28, 2026, 3:16 p.m.
Last Modified: April 28, 2026, 10:16 p.m.

Status : Undergoing Analysis

CVE has been recently published to the CVE List and has been received by the NVD.

More info

Source

[email protected]

*Disclaimer: Some vulnerabilities do not have an associated CPE. To enhance the data, we use AI to infer CPEs based on CVE details. This is an automated process and might not always be accurate.