CVE-2026-4680Disclosure(apple / chrome)

MEDIUMCVSS 8.8 · HIGH

Exploitation observed; activity peaked at 5 mentions and remains active

Immediate actions

Patch apple chrome systems immediately
Assume compromise if assets are exposed

Recommended action window: Immediate (within 24h)

NVD description

Use after free in FedCM in Google Chrome prior to 146.0.7680.165 allowed a remote attacker to execute arbitrary code inside a sandbox via a crafted HTML page. (Chromium security severity: High)

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5.0/ 10 priority

Sources & remediation

Vendor / third-party advisories

https://chromereleases.googleblog.com/2026/03/stable-channel-update-for-desktop_23.html

Other references

https://issues.chromium.org/issues/491869946

Weakness type (CWE)

CWE-416

Priority

MEDIUM

Exploitation

ACTIVE

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.

chrome
linux_kernel
macos
windows

Threat summary

Active exploitation appears in 1 classified signals
Patch or workaround signal is available
8 mentions across 4 observed days
Momentum state: stable

What's happening

Active exploitation reported across 1 signal
Patch or workaround mentioned in 1 signal
Technical details provided in 6 signals
Disclosure: 5 classified signals
General: 1 classified signal
Peaked 3d ago at 5 mentions (2026-03-24); latest day: 1
8 total mentions across 4 days

Affected systems

Vendors

apple google linux microsoft

Products

chromelinux_kernelmacoswindows

1 version affected across 4 products

Deep dive

Activity timeline8 mentions / 4d

Signal classification4 categories

Disclosure

562.5%

Active Exploitation

112.5%

General

112.5%

Patch

112.5%

Referenced assets7 URLs

By indicator

Classification over time

Date	Total	Labels

2026-03-24	5	Active Exploitation1Disclosure4
2026-03-25	1	Disclosure1
2026-03-28	1	General1
2026-03-31	1	Patch1

Full discourse8 posts

iototsecnews@iototsecnews192d
Patch
Google Chrome の脆弱性 8件が修正：リモート・コード実行などの可能性 https://iototsecnews.jp/2026/03/24/chrome-security-update-fixes-8-vulnerabilities-that-could-enable-remote-code-execution/ 訳者後書：今回のアップデートで修正された脆弱性の多くは、メモリ管理の不備に起因しています。たとえば、ヒープバッファ・オーバーフローの脆弱性 CVE-2026-4673／CVE-2026-4675 は、確保された領域を超えてデータが書き込まれることで発動されます。また、解放後メモリ使用 (use-after-free) の脆弱性 CVE-2026-4676／CVE-2026-4678／CVE-2026-4680 は、すでに解放されたメモリ領域にプログラムがアクセスし続けることで発動します。その他にも、境界外読み取りの脆弱性 CVE-2026-4674／CVE-2026-4677 や、整数オーバーフローの脆弱性 CVE-2026-4679 などは、メモリの扱いにおける予期せぬ動作を生じます。こうした低レイヤーでの管理ミスが、攻撃者にシステム制御を許すきっかけとなります。ご利用のチームは、ご注意ください。 #Chrome #CVE20264673 #CVE20264674 #CVE20264675 #CVE20264676 #CVE20264677 #CVE20264678 #CVE20264679 #CVE20264680 #Google #Vulnerability
Post summary
Google Chrome released an update that patches eight CVEs mainly involving memory‑management bugs such as heap buffer overflows and use‑after‑free conditions, which could allow remote code execution. The article outlines the vulnerability types and notes the update mitigates them.
01110239
481 followersView on X
WindowsForum@windowsforum194d
General
🧨 Chrome’s FedCM use-after-free (CVE-2026-4680) screams “patch fast.” If a crafted HTML page can hit RCE—even in the sandbox—your browser’s not your safe word. https://windowsforum.com/threads/chrome-fedcm-use-after-free-cve-2026-4680-patch-before-146-0-7680-165.408068/ #ChromeUpdate #ChromiumVulnerabilities #Cve20264680 #FedcmSecurity https://t.co/gnYvqPZkR2
Post summary
The tweet flags Chrome’s FedCM use‑after‑free (CVE‑2026‑4680) as a potential RCE risk and urges people to patch, but provides no PoC, exploit code, or patch details.
0000048
1.0K followersView on X
Nicolas Coolman@NicolasCoolman197d
Disclosure
📢 Google Chrome en Alerte : Faille Critique CVE-2026-4680 Permet l’Exécution de Code à Distance ! https://t.co/TbHrG6Ra8B
Post summary
The tweet announces a newly disclosed critical vulnerability (CVE-2026-4680) in Google Chrome that permits remote code execution, but does not provide exploit details, active exploitation evidence, or patch information.
0000042
84 followersView on X
VulDB 🛡@vuldb198d
Active Exploitation
Our CTI team identified a lot of activities targeting Google Chrome (CVE-2026-4680) https://vuldb.com/?ctiid.352620
Post summary
The CTI team has detected numerous activities targeting Google Chrome CVE-2026-4680, indicating that this vulnerability is currently being exploited in the wild.
0000053
2.1K followersView on X
Vulmon Vulnerability Feed@VulmonFeeds198d
Disclosure
CVE-2026-4680 Use-After-Free in Google Chrome FedCM Enables Remote Code Execution via Crafted HTML https://vulmon.com/vulnerabilitydetails?qid=CVE-2026-4680
Post summary
The notice reports CVE‑2026‑4680, a use‑after‑free bug in Google Chrome FedR that permits remote code execution through crafted HTML, with no mention of PoC, exploitation, patches, or false‑positive status.
0000045
4.0K followersView on X
CVE@CVEnew198d
Disclosure
CVE-2026-4680 Use after free in FedCM in Google Chrome prior to 146.0.7680.165 allowed a remote attacker to execute arbitrary code inside a sandbox via a crafted HTML page. (Chromium… https://www.cve.org/CVERecord?id=CVE-2026-4680
Post summary
The entry details a use‑after‑free vulnerability (CVE‑2026‑4680) in Google Chrome’s FedCM that allows a remote attacker to run arbitrary code inside a sandbox through a crafted HTML page; no PoC, exploit code, patch, or active exploitation is reported.
00000143
56.8K followersView on X
VulDB 🛡@vuldb199d
Disclosure
We have just added an important vulnerability affecting Google Chrome (CVE-2026-4680) https://vuldb.com/?id.352620
Post summary
The post announces a new CVE-2026-4680 vulnerability in Google Chrome, providing a reference to a Vuldb entry but no additional exploitation or mitigation details.
0000063
2.1K followersView on X
The Hacker Wire@TheHackerWire199d
Disclosure
🟠 CVE-2026-4680 - High Use after free in FedCM in Google Chrome prior to 146.0.7680.165 allowed a remote attacker to execute arbitrary code inside a sandbox via a crafted HTML page. (Chromium security severity: High) https://www.thehackerwire.com/vulnerability/CVE-2026-4680/ https://t.co/XZijyS5PGR
Post summary
The text announces CVE-2026-4680, a use‑after‑free flaw in FedCM before Chrome 146, enabling remote code execution via a crafted HTML page, but it does not disclose a PoC, patch, or evidence of active exploitation.
0000042
145 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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What researchers are saying

CVE-2026-4680

WindowsForum[verified]@windowsforumGeneral

The tweet flags Chrome’s FedCM use‑after‑free (CVE‑2026‑4680) as a potential RCE risk and urges people to patch, but provides no PoC, exploit code, or patch details.

iototsecnews@iototsecnewsPatch

Google Chrome released an update that patches eight CVEs mainly involving memory‑management bugs such as heap buffer overflows and use‑after‑free conditions, which could allow remote code execution. The article outlines the vulnerability types and notes the update mitigates them.

Nicolas Coolman@NicolasCoolmanDisclosure

The tweet announces a newly disclosed critical vulnerability (CVE-2026-4680) in Google Chrome that permits remote code execution, but does not provide exploit details, active exploitation evidence, or patch information.

VulDB 🛡@vuldbActive Exploitation

The CTI team has detected numerous activities targeting Google Chrome CVE-2026-4680, indicating that this vulnerability is currently being exploited in the wild.

Vulmon Vulnerability Feed@VulmonFeedsDisclosure

The notice reports CVE‑2026‑4680, a use‑after‑free bug in Google Chrome FedR that permits remote code execution through crafted HTML, with no mention of PoC, exploitation, patches, or false‑positive status.

CVE@CVEnewDisclosure

The entry details a use‑after‑free vulnerability (CVE‑2026‑4680) in Google Chrome’s FedCM that allows a remote attacker to run arbitrary code inside a sandbox through a crafted HTML page; no PoC, exploit code, patch, or active exploitation is reported.

VulDB 🛡@vuldbDisclosure

The post announces a new CVE-2026-4680 vulnerability in Google Chrome, providing a reference to a Vuldb entry but no additional exploitation or mitigation details.

The Hacker Wire@TheHackerWireDisclosure

The text announces CVE-2026-4680, a use‑after‑free flaw in FedCM before Chrome 146, enabling remote code execution via a crafted HTML page, but it does not disclose a PoC, patch, or evidence of active exploitation.