CVE-2025-2783
HighExploitedPublic exploitIncorrect handle provided in unspecified circumstances in Mojo in Google Chrome on Windows prior to 134.0.6998.177 allowed a remote attacker to perform a sandbox escape via a malicious file.
Published Mar 25, 2025 · Updated Feb 26, 2026
Key Facts
Patch immediately- CVE-2025-2783 is a high-severity vulnerability (CVSS 8.3 v3.1) affecting Chrome (Google), qt5-qtwebengine (alpine), qt6-qtwebengine (alpine) and 16 more products.
- It is exploited in the wild, listed in CISA KEV, Industry KEV feed, CIRCL KEV, ENISA EUVD since Mar 25, 2025. Public exploit code is available.
- EPSS estimates a 9.2% probability of exploitation in the next 30 days.
- Fixed versions are available, including Chrome 134.0.6998.177, firefox-esr 128.9.0-1.1, firefox-esr-branding-upstream 128.9.0-1.1.
- Brandefense priority: patch immediately, because it is listed as exploited in the wild.
CVSS v3.1
8.3
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:H
EPSS (30-day exploit likelihood)
9.2%
Higher than 95.3% of all scored CVEs
Exploited in the wild
Yes
4 catalog listings
Public exploit code
Available
Proof-of-concept or weaponized module
Get the full CVE-2025-2783 brief as a PDF
Every affected product and fixed release, exploitation status and a first 24 hours response checklist, emailed within minutes.
Description
Incorrect handle provided in unspecified circumstances in Mojo in Google Chrome on Windows prior to 134.0.6998.177 allowed a remote attacker to perform a sandbox escape via a malicious file. (Chromium security severity: High)
Known-Exploited Catalog Listings
| Catalog | Added | Remediation due | Ransomware use |
|---|---|---|---|
| CISA KEV | Mar 27, 2025 | Apr 17, 2025 | Not reported |
| Industry KEV feed | Mar 25, 2025 | Apr 17, 2025 | Not reported |
| CIRCL KEV | Mar 27, 2025 | Apr 17, 2025 | Not reported |
| ENISA EUVD | Mar 27, 2025 | n/a | Not reported |
Required action: Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
Affected Products
29 affected entries in total| Product | Affected versions | Fixed in |
|---|---|---|
| ChromeGoogle | >= 134.0.6998.177 | 134.0.6998.177 |
| qt5-qtwebenginealpine | See advisory | 5.15.17-r7 |
| qt6-qtwebenginealpine | See advisory | 6.8.2-r3 |
| chromiumdebian | See advisory | 0 |
| firefox-esr-branding-upstreamsuse | See advisory | 128.9.0-1.1 |
Patched Releases
Chrome
134.0.6998.177
firefox-esr
128.9.0-1.1
firefox-esr-branding-upstream
128.9.0-1.1
firefox-esr-translations-common
128.9.0-1.1
firefox-esr-translations-other
128.9.0-1.1
libqt5-qtpdf-devel
5.15.19-1.1
libqt5-qtpdf-examples
5.15.19-1.1
libqt5-qtpdf-imports
5.15.19-1.1
libqt5-qtpdf-private-headers-devel
5.15.19-1.1
libqt5-qtwebengine
5.15.19-1.1
libqt5-qtwebengine-devel
5.15.19-1.1
libqt5-qtwebengine-examples
5.15.19-1.1
libqt5-qtwebengine-private-headers-devel
5.15.19-1.1
libQt5Pdf5
5.15.19-1.1
libQt5PdfWidgets5
5.15.19-1.1
opera
117.0.5408.163-lp156.2.32.1
qt5-qtwebengine
5.15.17-r10, 5.15.17-r7
qt6-qtwebengine
6.8.2-r3
Timeline
Publicly disclosed
Mar 25, 2025
Added to Industry KEV feed
Mar 25, 2025
Added to CISA KEV
Mar 27, 2025
Added to CIRCL KEV
Mar 27, 2025
Added to ENISA EUVD
Mar 27, 2025
Last updated
Feb 26, 2026
References
- advisoryMOZILLA MFSA 2025-19
- exploitVulnCheck exploitation report
- exploitVulnCheck exploitation report
- exploitVulnCheck exploitation report
- exploitVulnCheck exploitation report
FAQ
Common Questions.
Incorrect handle provided in unspecified circumstances in Mojo in Google Chrome on Windows prior to 134.0.6998.177 allowed a remote attacker to perform a sandbox escape via a malicious file.
Affected: Chrome (Google) versions >= 134.0.6998.177; qt5-qtwebengine (alpine); qt6-qtwebengine (alpine), among others. The full list is in the CVE brief.
It is exploited in the wild, listed in CISA KEV, Industry KEV feed, CIRCL KEV, ENISA EUVD since Mar 25, 2025.
Yes. It was added on Mar 27, 2025 with a federal remediation due date of Apr 17, 2025.
Public exploit code is available.
Fixed versions are available, including Chrome 134.0.6998.177, firefox-esr 128.9.0-1.1, firefox-esr-branding-upstream 128.9.0-1.1.
Brandefense priority: patch immediately, because it is listed as exploited in the wild.
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