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CVE-2026-66323
Microsoft Edge (Chromium-based) Remote Code Execution Vulnerability
Medium5.4EPSS 0.41%
- Published
- Updated
- Reserved
- Assigned by
- microsoft
Description
Improper neutralization of parameter/argument delimiters in Microsoft Edge (Chromium-based) allows an unauthorized attacker to execute code over a network.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| microsoftCNA (assigner) | 3.1 | Medium5.4 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N/E:U/RL:O/RC:C |
| NVDNVD · Analyzed | 3.1 | Medium5.4 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N |
- EPSS (exploitation in 30 days)
- 0.41% · top 64% of all CVEs (6 Nov 2026)
- CISA SSVC
- Exploitation: none · Automatable: no · Technical impact: total
Loading the EPSS history…
The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 5.4.
Weakness
Affected products
Microsoft · Microsoft Edge (Chromium-based)
- affected 1.0.0.0 – < 152.0.4191.53
Microsoft · Microsoft Edge for Android
- affected 1.0.0.0 – < 152.0.4191.52
Microsoft · Microsoft Edge for iOS
- affected 1.0.0.0 – < 152.0.4191.52
Microsoft · Microsoft Edge for Linux
- affected 1.0.0 – < 152.0.4191.52
Microsoft · Microsoft Edge for MAC
- affected 1.0.0.0 – < 152.0.4191.52
Microsoft · Microsoft Edge for Windows
- affected 1.0.0.0 – < 152.0.4191.52
References (1)
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://trackcve.app/cve/CVE-2026-66323)Record last updated .