CVE-2019-8720Known exploitationNetwork attack vector

Code execution via crafted-content memory corruption

Published Mar 6, 2023 · Updated Oct 21, 2025

Memory corruption in WebKitGTK before 2.26.0 allows remote attackers to execute arbitrary code through maliciously crafted web content. The upstream advisory does not identify the affected functions or memory operation; it states only that improved memory handling addresses multiple corruption issues. A user must cause an embedding application to process attacker-controlled content, after which code executes in that application's security context.

CVSS severity8.8
High
EPSS probability1.56%
Next 30 days · Sep 16, 2026
Known exploitationReported
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Memory corruption in WebKitGTK before 2.26.0 allows remote attackers to execute arbitrary code through maliciously crafted web content. The upstream advisory does not identify the affected functions or memory operation; it states only that improved memory handling addresses multiple corruption issues. A user must cause an embedding application to process attacker-controlled content, after which code executes in that application's security context.

The record

CVE
CVE-2019-8720
Published
Mar 6, 2023
Updated
Oct 21, 2025
Vendor
The WebKitGTK Team
Product
WebKitGTK
Classifications
CWE-119, T1203
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. May 23, 2022Exploitation reportedWebKitGTK Memory Corruption Vulnerability in CISA KEV
  2. Mar 6, 2023CVE publishedPublication date reported by the CVE source.
  3. Oct 21, 2025Record 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=Fixed in webkitgtk 2.26.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

The WebKitGTK Team · WebKitGTKversion=Fixed in webkitgtk 2.26.0

Published CVSS scores

8.8CanonicalCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
8.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
8.8CISA-ADPCVSS: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.

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No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationReported
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-119Improper Restriction of Operations within the Bounds of a Memory Buffer
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.

Reported exploitation

Technologies

Your stack

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Your stack

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