CVE-2026-6752

Incorrect boundary conditions in the WebRTC component. This vulnerability was fixed in Firefox 150, Firefox ESR 115.35, Firefox ESR 140.10, Thunderbird 150, and Thunderbird 140.10.
References
Link Resource
https://bugzilla.mozilla.org/show_bug.cgi?id=2027499 Permissions Required
https://www.mozilla.org/security/advisories/mfsa2026-30/ Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2026-31/ Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2026-32/ Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2026-33/ Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2026-34/ Vendor Advisory
https://access.redhat.com/errata/RHSA-2026:10757
https://access.redhat.com/errata/RHSA-2026:10766
https://access.redhat.com/errata/RHSA-2026:10767
https://access.redhat.com/errata/RHSA-2026:12285
https://access.redhat.com/errata/RHSA-2026:13537
https://access.redhat.com/errata/RHSA-2026:15892
https://access.redhat.com/errata/RHSA-2026:17477
https://access.redhat.com/errata/RHSA-2026:17687
https://access.redhat.com/errata/RHSA-2026:17688
https://access.redhat.com/errata/RHSA-2026:17689
https://access.redhat.com/errata/RHSA-2026:17690
https://access.redhat.com/errata/RHSA-2026:19041
https://access.redhat.com/errata/RHSA-2026:19131
https://access.redhat.com/errata/RHSA-2026:19201
https://access.redhat.com/errata/RHSA-2026:19348
https://access.redhat.com/errata/RHSA-2026:19461
https://access.redhat.com/errata/RHSA-2026:19462
https://access.redhat.com/errata/RHSA-2026:19463
https://access.redhat.com/errata/RHSA-2026:19464
https://access.redhat.com/errata/RHSA-2026:19465
https://access.redhat.com/errata/RHSA-2026:19466
https://access.redhat.com/errata/RHSA-2026:19467
https://access.redhat.com/errata/RHSA-2026:19468
https://access.redhat.com/errata/RHSA-2026:19469
https://access.redhat.com/errata/RHSA-2026:19542
https://access.redhat.com/errata/RHSA-2026:19655
https://access.redhat.com/errata/RHSA-2026:19704
https://access.redhat.com/security/cve/CVE-2026-6752
https://bugzilla.redhat.com/show_bug.cgi?id=2460078
https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-6752.json
Configurations

Configuration 1 (hide)

OR cpe:2.3:a:mozilla:firefox:*:*:*:*:esr:*:*:*
cpe:2.3:a:mozilla:firefox:*:*:*:*:-:*:*:*
cpe:2.3:a:mozilla:firefox:*:*:*:*:esr:*:*:*
cpe:2.3:a:mozilla:thunderbird:*:*:*:*:esr:*:*:*

History

30 Jun 2026, 03:21

Type Values Removed Values Added
References
  • () https://access.redhat.com/errata/RHSA-2026:10757 -
  • () https://access.redhat.com/errata/RHSA-2026:10766 -
  • () https://access.redhat.com/errata/RHSA-2026:10767 -
  • () https://access.redhat.com/errata/RHSA-2026:12285 -
  • () https://access.redhat.com/errata/RHSA-2026:13537 -
  • () https://access.redhat.com/errata/RHSA-2026:15892 -
  • () https://access.redhat.com/errata/RHSA-2026:17477 -
  • () https://access.redhat.com/errata/RHSA-2026:17687 -
  • () https://access.redhat.com/errata/RHSA-2026:17688 -
  • () https://access.redhat.com/errata/RHSA-2026:17689 -
  • () https://access.redhat.com/errata/RHSA-2026:17690 -
  • () https://access.redhat.com/errata/RHSA-2026:19041 -
  • () https://access.redhat.com/errata/RHSA-2026:19131 -
  • () https://access.redhat.com/errata/RHSA-2026:19201 -
  • () https://access.redhat.com/errata/RHSA-2026:19348 -
  • () https://access.redhat.com/errata/RHSA-2026:19461 -
  • () https://access.redhat.com/errata/RHSA-2026:19462 -
  • () https://access.redhat.com/errata/RHSA-2026:19463 -
  • () https://access.redhat.com/errata/RHSA-2026:19464 -
  • () https://access.redhat.com/errata/RHSA-2026:19465 -
  • () https://access.redhat.com/errata/RHSA-2026:19466 -
  • () https://access.redhat.com/errata/RHSA-2026:19467 -
  • () https://access.redhat.com/errata/RHSA-2026:19468 -
  • () https://access.redhat.com/errata/RHSA-2026:19469 -
  • () https://access.redhat.com/errata/RHSA-2026:19542 -
  • () https://access.redhat.com/errata/RHSA-2026:19655 -
  • () https://access.redhat.com/errata/RHSA-2026:19704 -
  • () https://access.redhat.com/security/cve/CVE-2026-6752 -
  • () https://bugzilla.redhat.com/show_bug.cgi?id=2460078 -
  • () https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-6752.json -
CWE CWE-131

22 Apr 2026, 16:08

Type Values Removed Values Added
References () https://bugzilla.mozilla.org/show_bug.cgi?id=2027499 - () https://bugzilla.mozilla.org/show_bug.cgi?id=2027499 - Permissions Required
References () https://www.mozilla.org/security/advisories/mfsa2026-30/ - () https://www.mozilla.org/security/advisories/mfsa2026-30/ - Vendor Advisory
References () https://www.mozilla.org/security/advisories/mfsa2026-31/ - () https://www.mozilla.org/security/advisories/mfsa2026-31/ - Vendor Advisory
References () https://www.mozilla.org/security/advisories/mfsa2026-32/ - () https://www.mozilla.org/security/advisories/mfsa2026-32/ - Vendor Advisory
References () https://www.mozilla.org/security/advisories/mfsa2026-33/ - () https://www.mozilla.org/security/advisories/mfsa2026-33/ - Vendor Advisory
References () https://www.mozilla.org/security/advisories/mfsa2026-34/ - () https://www.mozilla.org/security/advisories/mfsa2026-34/ - Vendor Advisory
First Time Mozilla
Mozilla firefox
Mozilla thunderbird
CPE cpe:2.3:a:mozilla:firefox:*:*:*:*:-:*:*:*
cpe:2.3:a:mozilla:thunderbird:*:*:*:*:esr:*:*:*
cpe:2.3:a:mozilla:firefox:*:*:*:*:esr:*:*:*

22 Apr 2026, 00:16

Type Values Removed Values Added
References
  • () https://www.mozilla.org/security/advisories/mfsa2026-33/ -
  • () https://www.mozilla.org/security/advisories/mfsa2026-34/ -
Summary (en) Incorrect boundary conditions in the WebRTC component. This vulnerability was fixed in Firefox 150, Firefox ESR 115.35, and Firefox ESR 140.10. (en) Incorrect boundary conditions in the WebRTC component. This vulnerability was fixed in Firefox 150, Firefox ESR 115.35, Firefox ESR 140.10, Thunderbird 150, and Thunderbird 140.10.

21 Apr 2026, 20:17

Type Values Removed Values Added
CVSS v2 : unknown
v3 : unknown
v2 : unknown
v3 : 7.3
CWE CWE-119

21 Apr 2026, 13:16

Type Values Removed Values Added
New CVE

Information

Published : 2026-04-21 13:16

Updated : 2026-07-15 01:16


NVD link : CVE-2026-6752

Mitre link : CVE-2026-6752

CVE.ORG link : CVE-2026-6752


JSON object : View

Products Affected

mozilla

  • firefox
  • thunderbird
CWE
CWE-119

Improper Restriction of Operations within the Bounds of a Memory Buffer

CWE-131

Incorrect Calculation of Buffer Size