CVE-2026-57983
CWE-285Published: July 3, 2026· Updated: Jul 7, 2026
Official Description
Improper authorization in Microsoft Edge (Chromium-based) allows an unauthorized attacker to bypass a security feature over a network.
Risk Analysis
This critical vulnerability in Microsoft Edge (Chromium-based) allows an unauthorized attacker to bypass a security feature over a network. With a perfect CVSS score of 10.0, this flaw represents the highest possible risk, as it can lead to complete compromise of confidentiality and integrity without any user interaction. The lack of an EPSS score does not diminish the urgency given the maximum severity.
No public exploit is currently known for this vulnerability. However, it is remotely exploitable over the network with low attack complexity by unauthenticated attackers.
Users of Microsoft Edge (Chromium-based) should apply all available security updates immediately. Ensure that automatic updates are enabled to receive critical patches as soon as they are released.
Technical Analysis
CVE-2026-57983 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.
The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.
A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), with a CVSS base score of 10.0.
The vulnerability has a "Changed" scope, meaning successful exploitation can impact components beyond the vulnerable component itself — such as the host operating system or adjacent services.
CVSS v3.1 Vector Breakdown
Affected Vendors & Products
Exploit & PoC Resources
Official Patches & Advisories
All References (1)
Quick Facts
Related CVEs (CWE-285)
Recommended Actions
- →Apply vendor patches immediately
- →Monitor CVE-2026-57983 in threat intel feeds
- →Review IDS/IPS signatures for exploitation attempts