How severe is CVE-2019-11023?

CVE-2019-11023 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2019-11023 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 5% (91st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2019-11023?

CVE-2019-11023 affects Graphviz. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2019-11023?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2019-11023 published?

CVE-2019-11023 was published on 2019-04-08 and last updated on 2026-06-17.

CVE-2019-11023

CVE-2019-11023 is a high-severity vulnerability in Graphviz with a CVSS 3.x base score of 8.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-476.

Key facts

Severity: High (CVSS 3.x base score 8.8)
CVSS v2: 6.8
EPSS exploit prediction: 5% (91st percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-476
Affected product: Graphviz
Published: 2019-04-08
Last modified: 2026-06-17

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.

Frequently asked questions

What is CVE-2019-11023?: 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.
How severe is CVE-2019-11023?: CVE-2019-11023 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2019-11023 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 5% (91st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2019-11023?: CVE-2019-11023 affects Graphviz. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2019-11023?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2019-11023 published?: CVE-2019-11023 was published on 2019-04-08 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:graphviz:graphviz:2.39.20160612.1140:*:*:*:*:*:*:*

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