CVE-2017-5021: n/a Google Chrome prior to 56.0.2924.76 for Linux,…

CVE-2017-5021: A use after free in Google Chrome prior to 56.0.2924.76 for Linux, Windows and Mac, and 56.0.2924.87 for An...

A use after free in Google Chrome prior to 56.0.2924.76 for Linux, Windows and Mac, and 56.0.2924.87 for Android, allowed a remote attacker to perform an out of bounds memory read via a crafted HTML page.

UnknownCVSS not scoredNot KEV-listedUpdatedAug 5, 2024, 14:47 UTC (UTC+00:00)

Security readout for executives and security teams

CVE-2017-5021 is a Chrome memory safety flaw in older desktop and Android versions. A malicious web page could trigger an out-of-bounds memory read, creating browser-side risk for users who still run the affected versions. Exposure is mainly legacy Chrome or distro-packaged Chromium/Chrome builds that remained below the fixed versions. Modern, auto-updated Chrome fleets are unlikely to be exposed unless updates were disabled or frozen. Treat this as a legacy exposure cleanup item unless old Chrome versions remain in use. If legacy browsers exist on managed endpoints or kiosks, prioritize remediation because exploitation only requires web content interaction. Mitigation focus: Upgrade Chrome desktop to 56.0.2924.76 or later.; Upgrade Chrome for Android to 56.0.2924.87 or later.; Apply relevant Gentoo, Red Hat, or Debian browser security updates..

Prepared: Jun 13, 2026, 06:20 UTC (UTC+00:00)

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

Potential ATT&CK relevance

Conservative CVE-to-ATT&CK context

These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.

ATT&CK lookup starting points

Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.

cve · low confidence lookup

CVE-2017-5021 mapping review

Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.

Open ATT&CK lookup

Vulnerability profileCVE Program record

Severity: Unknown
CVSS: Not scored
Known Exploited: No
Published: Feb 17, 2017, 07:45 UTC (UTC+00:00)

Official CVE source material

CNA and ADP enrichment extracted from CVE v5

These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.

0CVSS vectors

0Timeline events

0ADP providers

4Source links

CVSS and timeline data

No CVSS vectors or timeline events were available in the normalized CVE source material.

Source materials

CVE List V5 sourceCVE List V5
https://crbug.com/663726CVE reference · x_refsource_CONFIRM
https://chromereleases.googleblog.com/2017/01/stable-channel-update-for-desktop.htmlCVE reference · x_refsource_CONFIRM
GLSA-201701-66CVE reference · vendor-advisory, x_refsource_GENTOO

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus

n/aGoogle Chrome prior to 56.0.2924.76 for Linux, Windows and Mac, and 56.0.2924.87 for AndroidGoogle Chrome prior to 56.0.2924.76 for Linux, Windows and Mac, and 56.0.2924.87 for AndroidListed

Weakness

CWE details

No CWE listed

CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.