The cr_tknzr_parse_rgb function in cr-tknzr.c in libcroco 0.6.11 and 0.6.12 has an "outside the range of representable values of type long" undefined behavior issue, which might allow remote attackers to cause a denial of service (application crash) or possibly have unspecified other impact via a crafted CSS file. NOTE: third-party analysis reports "This is not a security issue in my view. The conversion surely is truncating the double into a long value, but there is no impact as the value is one of the RGB components.
CVE-2017-7961
HIGHNVD 7.87.8—Elevated
EchelonGraph scoreMEDIUM confidence
Score 7.8 from GitHub Security Advisory (severity: HIGH) published 2022-05-14. NVD baseline CVSS 7.8; sources differ by 0.0.
Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
7.8
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
- High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 2%CVSS: 7.8Exploit: NoneExposed: 0
No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.
- CVSS v3
- 7.8
- EG Score
- 7.8(medium)
- EPSS
- 78.0%
- KEV
- Not listed
Published
April 19, 2017
Last Modified
May 13, 2026
References (12)
- cve@mitrehttp://lists.opensuse.org/opensuse-security-announce/2019-06/msg00043.html
- cve@mitrehttp://openwall.com/lists/oss-security/2017/04/24/2
- cve@mitrehttps://blogs.gentoo.org/ago/2017/04/17/libcroco-heap-overflow-and-undefined-behavior/
- cve@mitrehttps://bugzilla.suse.com/show_bug.cgi?id=1034482
- cve@mitrehttps://git.gnome.org/browse/libcroco/commit/?id=9ad72875e9f08e4c519ef63d44cdbd94aa9504f7
- cve@mitrehttps://security.gentoo.org/glsa/201707-13
- af854a3a-2127-422b-91ae-364da2661108http://lists.opensuse.org/opensuse-security-announce/2019-06/msg00043.html
- af854a3a-2127-422b-91ae-364da2661108http://openwall.com/lists/oss-security/2017/04/24/2
- af854a3a-2127-422b-91ae-364da2661108https://blogs.gentoo.org/ago/2017/04/17/libcroco-heap-overflow-and-undefined-behavior/
- af854a3a-2127-422b-91ae-364da2661108https://bugzilla.suse.com/show_bug.cgi?id=1034482
- af854a3a-2127-422b-91ae-364da2661108https://git.gnome.org/browse/libcroco/commit/?id=9ad72875e9f08e4c519ef63d44cdbd94aa9504f7
- af854a3a-2127-422b-91ae-364da2661108https://security.gentoo.org/glsa/201707-13
Data Freshness Timeline
(refreshed 12× in last 7d / 46× in last 30d)
Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.
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Frequently asked(5)
What is CVE-2017-7961?
CVE-2017-7961 is a high vulnerability published on April 19, 2017. The crtknzrparse_rgb function in cr-tknzr.c in libcroco 0.6.11 and 0.6.12 has an "outside the range of representable values of type long" undefined behavior issue, which might allow remote attackers to cause a denial of service (application crash) or possibly have unspecified other impact via a…
When was CVE-2017-7961 disclosed?
CVE-2017-7961 was first published in the National Vulnerability Database on April 19, 2017, with the most recent update on May 13, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2017-7961 actively exploited?
CVE-2017-7961 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 78.0% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2017-7961?
CVE-2017-7961 has a CVSS v3 base score of 7.8 (NVD).
How do I remediate CVE-2017-7961?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2017-7961, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.
Dependency Blast Radius
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