CVE-2026-58284Disclosure(microsoft / edge_chromium)

LOWCVSS 8.3 · HIGH

Signal is active with 1 mentions in latest observed window

Immediate actions

Patch microsoft edge_chromium systems immediately

Recommended action window: Monitor and triage in normal cycle

NVD description

Improper authorization in Microsoft Edge (Chromium-based) allows an unauthorized attacker to execute code over a network.

microsoft CVEs Back to dashboard

0.5/ 10 priority

Sources & remediation

Vendor / third-party advisories

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-58284

Weakness type (CWE)

CWE-285

Priority

LOW

Exploitation

NONE

PoC

NONE

Patch

AVAILABLE

Momentum

STABLE

Are you affected?

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

edge_chromium

Threat summary

Patch or workaround signal is available
4 mentions across 3 observed days
Momentum state: stable

What's happening

Patch or workaround mentioned in 1 signal
Technical details provided in 3 signals
Disclosure: 2 classified signals
General: 1 classified signal
Peaked 2d ago at 2 mentions (2026-07-04); latest day: 1
4 total mentions across 3 days

Affected systems

Vendors

microsoft

Products

edge_chromium

Deep dive

Activity timeline4 mentions / 3d

Signal classification3 categories

Disclosure

250.0%

Patch

125.0%

General

125.0%

Referenced assets3 URLs

By indicator

Classification over time

Date	Total	Labels

2026-07-04	2	Disclosure2
2026-07-07	1	Patch1
2026-07-28	1	General1

Full discourse4 posts

IntegSec@integ_sec66d
General
CVE-2026-58284: Microsoft Edge Improper Authorization Bug - What It Means for Your Business and How to Respond https://hubs.li/Q04r2HQG0
Post summary
The snippet merely lists the CVE and points to an article about its business impact and response, but offers no technical or actionable details.
0000033
32 followersView on X
DFIR Lab@DFIR_Lab88d
Patch
🚨 HIGH SEVERITY: CVE-2026-58284 (CVSS 8.3) Microsoft Edge (Chromium) improper authorization flaw enables remote code execution. Network-based attack vector. Patch immediately. #CVE #Vulnerability #PatchNow https://t.co/9SlVURog4e
Post summary
The tweet announces a high‑severity CVE‑2026‑58284 in Microsoft Edge, describing an RCE via improper authorization and urging users to patch immediately.
0000046
66 followersView on X
Infoflowcloud@infoflowcloud91d
Disclosure
🚨*CVE* CVE-2026-58284 Improper authorization in Microsoft Edge (Chromium-based) allows an unauthorized attacker to execute code over a network. https://www.cve.org/CVERecord?id=CVE-2026-58284 ----- Traducción: CVE-2026-58284 Falta de autorización adecuada en Microsoft Edge (… http://infoflow.cloud`
Post summary
The post announces CVE‑2026‑58284, describing an improper authorization vulnerability in Microsoft Edge that could enable remote code execution; no PoC, exploit, patch, or active exploitation claim is provided.
0000046
91 followersView on X
CVE@CVEnew91d
Disclosure
CVE-2026-58284 Improper authorization in Microsoft Edge (Chromium-based) allows an unauthorized attacker to execute code over a network. https://www.cve.org/CVERecord?id=CVE-2026-58284
Post summary
The post announces CVE-2026-58284, detailing an improper authorization flaw in Microsoft Edge that permits remote code execution, but it does not provide any exploit code, patch information, or evidence of active exploitation.
00000840
57.7K followersView on X

CPE platform detail1 entries

Part:

Vendor:

Product:

Version:

Target SW:

Target HW:

1 of 1 entries

Part	Vendor	Product	Version	Target SW	Target HW
App	microsoft	edge_chromium	-	-	-

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What researchers are saying

CVE-2026-58284

IntegSec[verified]@integ_secGeneral

The snippet merely lists the CVE and points to an article about its business impact and response, but offers no technical or actionable details.

DFIR Lab[verified]@DFIR_LabPatch

The tweet announces a high‑severity CVE‑2026‑58284 in Microsoft Edge, describing an RCE via improper authorization and urging users to patch immediately.

Infoflowcloud@infoflowcloudDisclosure

The post announces CVE‑2026‑58284, describing an improper authorization vulnerability in Microsoft Edge that could enable remote code execution; no PoC, exploit, patch, or active exploitation claim is provided.

CVE@CVEnewDisclosure

The post announces CVE-2026-58284, detailing an improper authorization flaw in Microsoft Edge that permits remote code execution, but it does not provide any exploit code, patch information, or evidence of active exploitation.