CVE-2026-57977Important
Microsoft Edge (Chromium-based) Spoofing Vulnerability
Assessment
Improper neutralization of input during web page generation ('cross-site scripting') in Microsoft Edge (Chromium-based) allows an unauthorized attacker to perform spoofing over a network.
- Severity
- Important
- CVSS base score
- 7.1CVSS:3.1/
AV:N/ AC:L/ PR:N/ UI:R/ S:U/ C:L/ I:H/ A:N/ E:U/ RL:O/ RC:C - Impact
- Spoofing
- EPSS, next 30 days
- 0.6%Higher than 45.3% of scored CVEs · FIRST model run 26 Sep 2026 · about EPSS
- Exploitability
- Exploitation Unlikely
- Publicly disclosed
- No
- Customer action
- Required: apply the update
- Component
- Microsoft Edge (Chromium-based)
- Weakness
- CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
- Issued by
- Microsoft
- Published
- 3 Jul 2026 · July 2026
- Last revised
- 3 Jul 2026
Updates that fix it
0 KBsNo KB listed
MSRC lists no downloadable update, which usually means a service-side fix or a release-notes update. Check the MSRC advisory.
Affected products
Browser1 affected product
- Microsoft Edge (Chromium-based)