VulnSocial

CVE-2026-66798Disclosure(microsoft / edge_chromium)

LOWCVSS 4.3 · MEDIUM

Exploit discussion active in current signal (1 latest mentions)

Immediate actions

  • Hunt for exploitation attempts and persistence artifacts
  • Increase monitoring for publicly documented tradecraft
  • Track advisory updates for patch or workaround availability

Recommended action window: High priority (within 72h)

NVD description

Use after free in Microsoft Edge (Chromium-based) allows an unauthorized attacker to execute code over a network.

microsoft CVEsBack to dashboard
1.5/ 10 priority

Sources & remediation

Vendor / third-party advisories
Weakness type (CWE)
CWE-416

Priority

LOW

Exploitation

NONE

PoC

YES

Patch

NONE

Momentum

NONE

Are you affected?

If you run products in this scope, you should treat this CVE as relevant to your environment.

  • edge_chromium

Threat summary

  • Public PoC is present in monitored signal
  • 1 mentions across 1 observed day

What's happening

  • PoC mentioned or linked in 1 signal
  • Disclosure: 1 classified signal
  • 1 total mentions across 1 day

Affected systems

Vendors
microsoft
Products
edge_chromium

Deep dive

Activity timeline1 mentions / 1d
00111Mentions · 2026-08-29: 1PoC Mentioned / Linked · 2026-08-29: 108-29
Signal classification1 categories
Disclosure
1100.0%
Referenced assets1 URL
By indicator
Full discourse1 post
  • VulDB 🛡@vuldb
    Disclosure

    We have just added an important vulnerability affecting Microsoft Edge (CVE-2026-66798) https://vuldb.com/vuln/396865

    Post summary

    A new CVE-2026-66798 affecting Microsoft Edge has been added to vuldb.com, indicating a recent vulnerability disclosure.

    00000135
    2.3K followersView on X
CPE platform detail1 entries

1 of 1 entries

PartVendorProductVersionTarget SWTarget HW
Appmicrosoftedge_chromium---

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