CVE-2022-0798Network attack vector

Heap corruption via MediaStream use-after-free

Published Apr 5, 2022 · Updated Aug 2, 2024

Use-after-free in Google Chrome MediaStream before 99.0.4844.51 allows attackers to corrupt heap memory through a crafted extension. The public record identifies MediaStream but does not disclose which object is freed prematurely or which later operation reuses it. Exploitation requires convincing a user to install a malicious extension; the documented consequence is heap corruption, not a published sandbox escape.

CVSS severity8.8
High
EPSS probability0.69%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Use-after-free in Google Chrome MediaStream before 99.0.4844.51 allows attackers to corrupt heap memory through a crafted extension. The public record identifies MediaStream but does not disclose which object is freed prematurely or which later operation reuses it. Exploitation requires convincing a user to install a malicious extension; the documented consequence is heap corruption, not a published sandbox escape.

The record

CVE
CVE-2022-0798
Published
Apr 5, 2022
Updated
Aug 2, 2024
Vendor
Google Cloud
Product
Google Chrome
Classifications
CWE-416, T1176
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Apr 5, 2022CVE publishedPublication date reported by the CVE source.
  2. Aug 2, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=unspecified <99.0.4844.51

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Google Cloud · Google Chromeversion=unspecified <99.0.4844.51

Published CVSS scores

7.0NIST NVDAV:N/AC:M/Au:N/C:P/I:P/A:P
8.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-416Use After Free
T1176Browser Extensions

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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