CVE-2026-12457General(apple / chrome)

LOWCVSS 4.2 · MEDIUM

Signal is active with 1 mentions in latest observed window

Immediate actions

Track advisory updates for patch or workaround availability

Recommended action window: Monitor and triage in normal cycle

NVD description

Inappropriate implementation in Extensions in Google Chrome prior to 149.0.7827.155 allowed a remote attacker who had compromised the renderer process to bypass site isolation via a crafted HTML page. (Chromium security severity: High)

apple CVEs Back to dashboard

1.0/ 10 priority

Sources & remediation

Vendor / third-party advisories

https://chromereleases.googleblog.com/2026/06/stable-channel-update-for-desktop_01750511403.html

Other references

https://issues.chromium.org/issues/517153117

Weakness type (CWE)

CWE-693

Priority

LOW

Exploitation

NONE

PoC

NONE

Patch

NONE

Momentum

NONE

Are you affected?

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

chrome
linux_kernel
macos
windows

Threat summary

1 mentions across 1 observed day

What's happening

General: 1 classified signal
1 total mentions across 1 day

Affected systems

Vendors

apple google linux microsoft

Products

chromelinux_kernelmacoswindows

1 version affected across 4 products

Deep dive

Activity timeline1 mentions / 1d

Signal classification1 categories

General

1100.0%

Referenced assets1 URL

By indicator

https://windowsforum.com/threads/cve-2026-12457-and-chromium-in-edge-how-to-verify-your-browser-is-patched.428219/?utm_source=x&utm_medium=social&utm_campaign=news_node84

Full discourse1 post

WindowsForum@windowsforum91d
General
🪟 A Chromium CVE in Edge security notes isn’t a “clerical accident”—it’s Microsoft admitting browsers run on shared infrastructure chaos. Patch faster, verify harder… because trust is optional now. https://windowsforum.com/threads/cve-2026-12457-and-chromium-in-edge-how-to-verify-your-browser-is-patched.428219/?utm_source=x&utm_medium=social&utm_campaign=news_node84 #WindowsUpdateGuide #MicrosoftEdgeSecurity #Cve202612457 https://t.co/o6zvMNjVIp
Post summary
The tweet references a Chromium CVE (CVE-2026-12457) and urges users to patch, but it provides no technical details, PoC, or evidence of exploitation.
0000027
1.2K followersView on X

CPE platform detail4 entries

Part:

Vendor:

Product:

Version:

Target SW:

Target HW:

4 of 4 entries

Part	Vendor	Product	Version	Target SW	Target HW
OS	apple	macos	-	-	-
App	google	chrome	-	-	-
OS	linux	linux_kernel	-	-	-
OS	microsoft	windows	-	-	-

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