CVE-2019-5844Network attack vector

Heap corruption via out-of-bounds SwiftShader write

Published Jan 3, 2020 · Updated Aug 4, 2024

Out-of-bounds write in SwiftShader in Google Chrome before 73.0.3683.75 allows remote attackers to corrupt heap memory via crafted HTML. Public records identify SwiftShader as the locus but do not disclose the affected function, buffer, or missing bounds check. Exploitation requires a user to load the crafted page; the published impact is a browser service interruption rather than data disclosure or modification.

CVSS severity6.5
Medium
EPSS probability1.40%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Out-of-bounds write in SwiftShader in Google Chrome before 73.0.3683.75 allows remote attackers to corrupt heap memory via crafted HTML. Public records identify SwiftShader as the locus but do not disclose the affected function, buffer, or missing bounds check. Exploitation requires a user to load the crafted page; the published impact is a browser service interruption rather than data disclosure or modification.

The record

CVE
CVE-2019-5844
Published
Jan 3, 2020
Updated
Aug 4, 2024
Vendor
Google Cloud
Product
Google Chrome
Classifications
CWE-787, T1203
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jan 3, 2020CVE publishedPublication date reported by the CVE source.
  2. Aug 4, 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 <73.0.3683.75

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Google Cloud · Google Chromeversion=unspecified <73.0.3683.75

Published CVSS scores

6.5NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
4.3NIST NVDAV:N/AC:M/Au:N/C:N/I:N/A:P

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-787Out-of-bounds Write
T1203Exploitation for Client Execution

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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