EUVD-2026-40485
GHSA-282h-vfc3-82h7
Severity by source
AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Network-reachable QUIC traffic (AV:N) with no auth (PR:N) but a hard-to-win use-after-free race (AC:H); a successful UAF yields full process compromise, so C/I/A:H.
Primary rating from Vendor (google).
CVSS VectorVendor: google
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Lifecycle Timeline
4DescriptionCVE.org
Use after free in QUIC in Google Chrome prior to 150.0.7871.47 allowed a remote attacker to potentially exploit heap corruption via malicious network traffic. (Chromium security severity: High)
AnalysisAI
Heap corruption in Google Chrome's QUIC networking stack (versions prior to 150.0.7871.47) stems from a use-after-free that a remote attacker can trigger through crafted network traffic, potentially leading to arbitrary code execution in the affected browser process. Google rated the Chromium security severity as High and has shipped a fixed Stable-channel build; there is no public exploit identified at time of analysis and CISA's SSVC records exploitation status as 'none'. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires the victim's Chrome (prior to 150.0.7871.47) to process attacker-influenced QUIC/HTTP-3 traffic - meaning the browser must negotiate a QUIC connection to an attacker-controlled or on-path-manipulated server, so QUIC/HTTP-3 must be enabled (it is on by default) and reachable (outbound UDP/443 not blocked). … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The signals are consistent and point to a serious-but-not-urgent priority. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | An attacker operates or on-path-injects a malicious QUIC/HTTP-3 endpoint and lures or redirects a victim's Chrome browser into establishing a connection; specially sequenced QUIC packets drive the connection state machine into the use-after-free, corrupting the heap. With sufficient heap grooming the attacker turns the corruption into control over freed-object reuse, potentially achieving code execution in the affected process. … |
| Remediation | Vendor-released patch: update Google Chrome to 150.0.7871.47 or later via the Stable channel, as described in the Chrome Releases advisory at https://chromereleases.googleblog.com/2026/06/stable-channel-update-for-desktop_0175352312.html, and relaunch the browser so the staged update takes effect. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours: Identify all Chrome installations and their versions using your endpoint detection and response (EDR), Mobile Device Management (MDM), or software asset management (SAM) tools. …
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Same weakness CWE-416 – Use After Free
View allSame technique Memory Corruption
View allVendor StatusVendor
SUSE
Severity: Important| Product | Status |
|---|---|
| SUSE Package Hub 15 SP7 | Fixed |
| openSUSE Tumbleweed | Fixed |
| SUSE Package Hub 15 SP7 | Affected |
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External POC / Exploit Code
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