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Vulnerability record · CVE-2019-11023 · published 8 April 2019

CVE-2019-11023: Graphviz null pointer dereference vulnerability

Graphviz · Graphviz

The agroot() function in cgraph\obj.c in libcgraph.a in Graphviz 2.39.20160612.1140 has a NULL pointer dereference, as demonstrated by graphml2gv.

8.8 CVSS 3.0 High EPSS 4.9% · top 8.2% CWE-476 · NULL pointer dereference
8.8CVSS 3.0 base score, v2 6.8
4.9%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
16References, 4 tagged exploit
17 Jun 2026Last modified by NVD

Description

The agroot() function in cgraph\obj.c in libcgraph.a in Graphviz 2.39.20160612.1140 has a NULL pointer dereference, as demonstrated by graphml2gv.

CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
http://lists.opensuse.org/opensuse-security-announce/2019-05/msg00054.html
http://lists.opensuse.org/opensuse-security-announce/2019-05/msg00065.html
http://lists.opensuse.org/opensuse-security-announce/2020-06/msg00056.html
http://lists.opensuse.org/opensuse-security-announce/2020-06/msg00065.html
https://gitlab.com/graphviz/graphviz/issues/1517 ExploitThird Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/CLEAHLDJVMAEGA3YMC7KPKJ
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/FI3D5TQE3IMCSF5OUTXQL4G
https://research.loginsoft.com/bugs/null-pointer-dereference-in-function-agroot/ ExploitThird Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2019-05/msg00054.html
http://lists.opensuse.org/opensuse-security-announce/2019-05/msg00065.html
http://lists.opensuse.org/opensuse-security-announce/2020-06/msg00056.html
http://lists.opensuse.org/opensuse-security-announce/2020-06/msg00065.html
https://gitlab.com/graphviz/graphviz/issues/1517 ExploitThird Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/CLEAHLDJVMAEGA3YMC7KPKJ
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/FI3D5TQE3IMCSF5OUTXQL4G
https://research.loginsoft.com/bugs/null-pointer-dereference-in-function-agroot/ ExploitThird Party Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2019-11023), CISA KEV, FIRST EPSS (scores of 2026-09-28). This page is refreshed as NVD updates the record.