How severe is CVE-2018-7999?

CVE-2018-7999 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-2018-7999 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (81st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2018-7999?

CVE-2018-7999 affects Sil Graphite2. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2018-7999?

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-2018-7999 published?

CVE-2018-7999 was published on 2018-03-09 and last updated on 2026-06-17.

CVE-2018-7999

CVE-2018-7999 is a high-severity vulnerability in Sil Graphite2 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: 2% (81st percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-476
Affected product: Sil Graphite2
Published: 2018-03-09
Last modified: 2026-06-17

Description

In libgraphite2 in graphite2 1.3.11, a NULL pointer dereference vulnerability was found in Segment.cpp during a dumbRendering operation, which may allow attackers to cause a denial of service or possibly have unspecified other impact via a crafted .ttf file.

Frequently asked questions

What is CVE-2018-7999?: In libgraphite2 in graphite2 1.3.11, a NULL pointer dereference vulnerability was found in Segment.cpp during a dumbRendering operation, which may allow attackers to cause a denial of service or possibly have unspecified other impact via a crafted .ttf file.
How severe is CVE-2018-7999?: CVE-2018-7999 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-2018-7999 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (81st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2018-7999?: CVE-2018-7999 affects Sil Graphite2. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2018-7999?: 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-2018-7999 published?: CVE-2018-7999 was published on 2018-03-09 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:sil:graphite2:1.3.11:*:*:*:*:*:*:*

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