CVE-2026-6750 (GCVE-0-2026-6750)

Vulnerability from cvelistv5 – Published: 2026-04-21 12:40 – Updated: 2026-06-30 02:46
VLAI
Title
Privilege escalation in the Graphics: WebRender component
Summary
Privilege escalation in the Graphics: WebRender component. This vulnerability was fixed in Firefox 150, Firefox ESR 115.35, Firefox ESR 140.10, Thunderbird 150, and Thunderbird 140.10.
Severity
8.8 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
7.5 (High)
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
  • CWE-269 - Improper Privilege Management
  • CWE-266 - Incorrect Privilege Assignment
Assigner
References
URL Tags
https://bugzilla.mozilla.org/show_bug.cgi?id=2023407
https://www.mozilla.org/security/advisories/mfsa2…
https://www.mozilla.org/security/advisories/mfsa2…
https://www.mozilla.org/security/advisories/mfsa2…
https://www.mozilla.org/security/advisories/mfsa2…
https://www.mozilla.org/security/advisories/mfsa2…
https://access.redhat.com/security/cve/CVE-2026-6750 vdb-entryx_refsource_REDHAT
https://bugzilla.redhat.com/show_bug.cgi?id=2460102 issue-trackingx_refsource_REDHAT
https://security.access.redhat.com/data/csaf/v2/v… x_sadp-csaf-vex
https://access.redhat.com/errata/RHSA-2026:19704 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:17690 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:19463 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:10767 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:12285 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:19041 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:19131 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:10766 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:13537 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:19655 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:19465 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:19542 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:19466 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:17477 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:19467 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:17687 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:19468 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:17689 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:19461 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:19464 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:19469 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:17688 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:19462 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:10757 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:15892 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:19201 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:19348 vendor-advisoryx_refsource_REDHAT
Impacted products
Vendor Product Version
Mozilla Firefox Unaffected: 115.35 , ≤ 115.* (rpm)
Unaffected: 140.10 , ≤ 140.* (rpm)
Unaffected: 150 , ≤ * (rpm)
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Mozilla Thunderbird Unaffected: 140.10 , ≤ 140.* (rpm)
Unaffected: 150 , ≤ * (rpm)
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Red Hat Red Hat Enterprise Linux Server (v. 7 ELS)     cpe:/o:redhat:rhel_els:7
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Red Hat Red Hat Enterprise Linux AppStream EUS (v. 10.0)     cpe:/o:redhat:enterprise_linux_eus:10.0
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Red Hat Red Hat Enterprise Linux AppStream (v. 10)     cpe:/o:redhat:enterprise_linux:10.1
    cpe:/o:redhat:enterprise_linux:10.2
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Red Hat Red Hat Enterprise Linux AppStream (v. 8)     cpe:/a:redhat:enterprise_linux:8::appstream
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Red Hat Red Hat Enterprise Linux AppStream AUS (v.8.4)     cpe:/a:redhat:rhel_aus:8.4::appstream
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Red Hat Red Hat Enterprise Linux AppStream EUS EXTENSION (v.8.4)     cpe:/a:redhat:rhel_eus_long_life:8.4::appstream
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Red Hat Red Hat Enterprise Linux AppStream AUS (v.8.6)     cpe:/a:redhat:rhel_aus:8.6::appstream
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Red Hat Red Hat Enterprise Linux AppStream E4S (v.8.6)     cpe:/a:redhat:rhel_e4s:8.6::appstream
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Red Hat Red Hat Enterprise Linux AppStream TUS (v.8.6)     cpe:/a:redhat:rhel_tus:8.6::appstream
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Red Hat Red Hat Enterprise Linux AppStream E4S (v.8.8)     cpe:/a:redhat:rhel_e4s:8.8::appstream
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Red Hat Red Hat Enterprise Linux AppStream TUS (v.8.8)     cpe:/a:redhat:rhel_tus:8.8::appstream
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Red Hat Red Hat Enterprise Linux AppStream E4S (v.9.0)     cpe:/a:redhat:rhel_e4s:9.0::appstream
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Red Hat Red Hat Enterprise Linux AppStream E4S (v.9.2)     cpe:/a:redhat:rhel_e4s:9.2::appstream
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Red Hat Red Hat Enterprise Linux AppStream EUS (v.9.4)     cpe:/a:redhat:rhel_eus:9.4::appstream
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Red Hat Red Hat Enterprise Linux AppStream EUS (v.9.6)     cpe:/a:redhat:rhel_eus:9.6::appstream
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Red Hat Red Hat Enterprise Linux AppStream (v. 9)     cpe:/a:redhat:enterprise_linux:9::appstream
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Red Hat Red Hat Enterprise Linux 10     cpe:/o:redhat:enterprise_linux:10
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Red Hat Red Hat Enterprise Linux 6     cpe:/o:redhat:enterprise_linux:6
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Red Hat Red Hat Enterprise Linux 7     cpe:/o:redhat:enterprise_linux:7
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Credits
choeseyeong
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Tags
Taxonomy of the tags.





Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.