CVE-2026-4687
EUVD-2026-1479824.03.2026, 13:16
Sandbox escape due to incorrect boundary conditions in the Telemetry component. This vulnerability affects Firefox < 149, Firefox ESR < 115.34, Firefox ESR < 140.9, Thunderbird < 149, and Thunderbird < 140.9.
Affected Products (NVD)
| Vendor | Product | Version |
|---|---|---|
| mozilla | firefox_esr | 𝑥 < 115.34.0 |
| mozilla | firefox | 𝑥 < 149.0 |
| mozilla | firefox_esr | 128.0 ≤ 𝑥 < 140.9.0 |
𝑥
= Vulnerable software versions
Debian Releases
Debian Product | |||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| firefox |
| ||||||||||||||||
| firefox-esr |
| ||||||||||||||||
| thunderbird |
|
Common Weakness Enumeration
- CWE-754 - Improper Check for Unusual or Exceptional ConditionsThe software does not check or incorrectly checks for unusual or exceptional conditions that are not expected to occur frequently during day to day operation of the software.
- CWE-120 - Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')The program copies an input buffer to an output buffer without verifying that the size of the input buffer is less than the size of the output buffer, leading to a buffer overflow.
References