CVE-2026-57983
Unauthorized network-based bypass of a security feature in Edge via faulty authorization.
Is CVE-2026-57983 being exploited?
Not confirmed. CVE-2026-57983 does not appear in CISA's Known Exploited Vulnerabilities catalog, which records only exploitation that has been observed and reported publicly. That is evidence of absence of a report, not evidence the flaw is unattacked. EPSS currently estimates a 0.65% probability of exploitation in the next 30 days.
How severe is CVE-2026-57983?
CVE-2026-57983 is rated High with a CVSS score of 8.7. Severity describes how bad exploitation would be, not how likely it is: pair it with exploitation evidence before deciding what to patch first.
Is there a patch for CVE-2026-57983?
Yes. A fix has been recorded for CVE-2026-57983. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-57983 affect?
CVE-2026-57983 affects Microsoft Edge (Chromium). Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-57983?
Update Edge to the latest version; enable automatic updates.
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Remote bypass of Edge security feature via network; could enable evasion of protections and access to restricted content.
Patch when possible
- affected>= 1.0.0.0 and < 150.0.4078.48
As published in the CVE Program record. A version outside these ranges is not a statement that it is unaffected — vendors sometimes understate a range, and distribution-backported builds carry upstream numbers that do not reflect what was patched into them.