CVE-2015-1243: n/a vulnerability

CVE-2015-1243: Use-after-free vulnerability in the MutationObserver::disconnect function in core/dom/MutationObserver.cpp...

Use-after-free vulnerability in the MutationObserver::disconnect function in core/dom/MutationObserver.cpp in the DOM implementation in Blink, as used in Google Chrome before 42.0.2311.135, allows remote attackers to cause a denial of service or possibly have unspecified other impact by triggering an attempt to unregister a MutationObserver object that is not currently registered.

UnknownCVSS not scoredNot KEV-listedUpdatedAug 6, 2024, 04:33 UTC (UTC+00:00)

Security readout for executives and security teams

This is an old Chrome/Blink browser memory-safety flaw. A malicious webpage could trigger improper handling of a MutationObserver object, causing a browser crash and possibly other unspecified impact. The available sources identify the fix as Chrome 42.0.2311.135 and related Linux distribution updates. Exposure is most likely on legacy Chrome or Chromium builds older than 42.0.2311.135, including outdated distribution packages referenced by Debian, Ubuntu, Red Hat, Gentoo, and openSUSE advisories. Modern managed browsers should not be exposed if updates are current. Treat this as a legacy hygiene issue unless obsolete browsers remain in use. It is not KEV-listed in the provided data, but unmanaged old browsers create broader risk beyond this single CVE. Mitigation focus: Upgrade Chrome or Chromium to 42.0.2311.135 or later.; Apply relevant Linux distribution security updates for Chromium packages.; Retire unsupported browser versions from managed endpoints..

Prepared: Jun 13, 2026, 22:39 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

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Vulnerability profileCVE Program record

Severity: Unknown
CVSS: Not scored
Known Exploited: No
Published: May 1, 2015, 10:00 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://src.chromium.org/viewvc/blink?revision=192655&view=revisionCVE reference · x_refsource_CONFIRM
GLSA-201506-04CVE reference · vendor-advisory, x_refsource_GENTOO
https://code.google.com/p/chromium/issues/detail?id=453279CVE reference · x_refsource_CONFIRM

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus

n/an/an/aListed

Weakness

CWE details

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