# CVE-2025-8879: Chromium: CVE-2025-8879 Heap buffer overflow in libaom

CVE-2025-8879 is fixed in 7 products on 2 platforms, first by Microsoft Edge Dev 140.0.3421.0, released July 7, 2025. It is not reported as exploited. Patch Radar priority: High.

- Web page: https://patchblox.com/security/cve/CVE-2025-8879
- Priority: High
- CVSS: 8.8 (high)
- EPSS: 0.0030
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Aug 13, 2025
- Weakness: CWE-122: Heap buffer overflow
- Vendor advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-8879

## Description

<p>This CVE was assigned by Chrome.  Microsoft Edge (Chromium-based) ingests Chromium, which addresses this vulnerability. Please see <a href="https://chromereleases.googleblog.com/202%5BSS9.1%5D5">Google Chrome Releases</a> for more information.</p>

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Windows apps | Google Chrome (EXE) | 144.0.7559.133 | [Google Chrome (EXE) 144.0.7559.133](https://patchblox.com/security/data/fix/windows-app/google.chrome.exe-144.0.7559.133.md) | Feb 3, 2026 |
| Windows apps | Google Chrome Dev (EXE) | 144.0.7534.3 | [Google Chrome Dev (EXE) 144.0.7534.3](https://patchblox.com/security/data/fix/windows-app/google.chrome.dev.exe-144.0.7534.3.md) | Nov 20, 2025 |
| Windows apps | Microsoft Edge | 139.0.3405.102 | [Microsoft Edge 139.0.3405.102](https://patchblox.com/security/data/fix/windows-app/microsoft.edge-139.0.3405.102.md) | Aug 15, 2025 |
| Windows apps | Microsoft Edge Beta | 140.0.3485.11 | [Microsoft Edge Beta 140.0.3485.11](https://patchblox.com/security/data/fix/windows-app/microsoft.edge.beta-140.0.3485.11.md) | Aug 14, 2025 |
| Windows apps | Microsoft Edge Dev | 140.0.3421.0 | [Microsoft Edge Dev 140.0.3421.0](https://patchblox.com/security/data/fix/windows-app/microsoft.edge.dev-140.0.3421.0.md) | Jul 7, 2025 |
| Windows apps | Microsoft Edge WebView2 Runtime | 139.0.3405.102 | [Microsoft Edge WebView2 Runtime 139.0.3405.102](https://patchblox.com/security/data/fix/windows-app/microsoft.edgewebview2runtime-139.0.3405.102.md) | Aug 15, 2025 |
| Linux | chromium Debian 12.15 (bookworm) | 139.0.7258.127-1~deb12u1 | [DSA-5976-1](https://patchblox.com/security/data/fix/linux/dsa-5976-1.md) | Aug 14, 2025 |
| Linux | chromium Debian 13.5 (trixie) | 139.0.7258.127-1~deb13u1 | [DSA-5976-1](https://patchblox.com/security/data/fix/linux/dsa-5976-1.md) | Aug 14, 2025 |
| Linux | chromium Debian 14 | 139.0.7258.127-1 | [DEBIAN-CVE-2025-8879](https://patchblox.com/security/data/fix/linux/debian-cve-2025-8879.md) | Aug 13, 2025 |

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Data as of 2026-11-08T06:59:42Z UTC. Source: Patchblox Patch Radar (https://patchblox.com/security/patch-radar). Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

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