CVE-2017-1000121: n/a vulnerability

CVE-2017-1000121: The UNIX IPC layer in WebKit, including WebKitGTK+ prior to 2.16.3, does not properly validate message size...

The UNIX IPC layer in WebKit, including WebKitGTK+ prior to 2.16.3, does not properly validate message size metadata, allowing a compromised secondary process to trigger an integer overflow and subsequent buffer overflow in the UI process. This vulnerability does not affect Apple products.

UnknownCVSS not scoredNot KEV-listedUpdatedNov 14, 2024, 19:53 UTC (UTC+00:00)

Security readout for executives and security teams

This is a WebKit IPC parsing flaw. If an attacker has already compromised a secondary WebKit process, they may be able to crash or corrupt the higher-value UI process through malformed message size metadata. The source bundle names WebKitGTK+ before 2.16.3 and says Apple products are not affected. Exposure is most likely where WebKitGTK+ older than 2.16.3 is embedded in browsers, desktop apps, or Linux distributions. The bundle does not identify other affected products, package names, or CPEs. Apple products are explicitly excluded by the CVE description. Treat as high priority for Linux or GTK application fleets using old WebKitGTK+. The flaw can move impact from a compromised sandboxed process into the UI process, increasing business risk. Urgency is lower for environments without WebKitGTK+ exposure, and Apple products are excluded by the source bundle. Mitigation focus: Upgrade WebKitGTK+ to 2.16.3 or later where applicable.; Review vendor or distribution advisories for backported WebKitGTK+ fixes.; Prioritize systems running WebKitGTK+ in exposed desktop or browser-like contexts..

Prepared: Jun 12, 2026, 20:07 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: Nov 1, 2017, 21:00 UTC (UTC+00:00)

Official CVE source material

CNA and ADP enrichment extracted from CVE v5

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0CVSS vectors

0Timeline events

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1Source links

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Source materials

CVE List V5 sourceCVE List V5

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus

n/an/an/aListed

Weakness

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