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Vulnerability details: VCID-7jfm-94e8-ukds
Vulnerability ID VCID-7jfm-94e8-ukds
Aliases CVE-2017-1000121
Summary 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.
Status Published
Exploitability 0.5
Weighted Severity 8.8
Risk 4.4
Affected and Fixed Packages Package Details
Weaknesses (1)
CWE-190 Integer Overflow or Wraparound
System Score Found at
epss 0.00647 https://api.first.org/data/v1/epss?cve=CVE-2017-1000121
epss 0.00647 https://api.first.org/data/v1/epss?cve=CVE-2017-1000121
epss 0.00647 https://api.first.org/data/v1/epss?cve=CVE-2017-1000121
epss 0.00647 https://api.first.org/data/v1/epss?cve=CVE-2017-1000121
epss 0.00647 https://api.first.org/data/v1/epss?cve=CVE-2017-1000121
epss 0.00647 https://api.first.org/data/v1/epss?cve=CVE-2017-1000121
epss 0.00647 https://api.first.org/data/v1/epss?cve=CVE-2017-1000121
epss 0.00647 https://api.first.org/data/v1/epss?cve=CVE-2017-1000121
epss 0.00647 https://api.first.org/data/v1/epss?cve=CVE-2017-1000121
cvssv2 7.5 https://nvd.nist.gov/vuln/detail/CVE-2017-1000121
cvssv3.1 9.8 https://nvd.nist.gov/vuln/detail/CVE-2017-1000121
ssvc Track http://trac.webkit.org/changeset/217126/webkit
Reference id Reference type URL
https://api.first.org/data/v1/epss?cve=CVE-2017-1000121
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-1000121
https://webkitgtk.org/security/WSA-2017-0007.html
http://trac.webkit.org/changeset/217126/webkit
cpe:2.3:a:webkitgtk:webkitgtk\+:*:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:webkitgtk:webkitgtk\+:*:*:*:*:*:*:*:*
CVE-2017-1000121 https://nvd.nist.gov/vuln/detail/CVE-2017-1000121
No exploits are available.
Vector: AV:N/AC:L/Au:N/C:P/I:P/A:P Found at https://nvd.nist.gov/vuln/detail/CVE-2017-1000121
Exploitability (E) Access Vector (AV) Access Complexity (AC) Authentication (Au) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

high

functional

unproven

proof_of_concept

not_defined

local

adjacent_network

network

high

medium

low

multiple

single

none

none

partial

complete

none

partial

complete

none

partial

complete
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Found at https://nvd.nist.gov/vuln/detail/CVE-2017-1000121
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: SSVCv2/E:N/A:Y/T:T/P:M/B:A/M:M/D:T/2024-02-16T16:37:57Z/ Found at http://trac.webkit.org/changeset/217126/webkit
Exploit Prediction Scoring System (EPSS)
Percentile 0.70688
EPSS Score 0.00647
Published At April 1, 2026, 12:55 p.m.
Date Actor Action Source VulnerableCode Version
2026-04-01T16:32:18.972824+00:00 Debian Oval Importer Import https://www.debian.org/security/oval/oval-definitions-bullseye.xml.bz2 38.0.0