How severe is CVE-2017-7870?

CVE-2017-7870 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2017-7870 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 4% (89th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2017-7870?

CVE-2017-7870 affects Libreoffice. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2017-7870?

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

When was CVE-2017-7870 published?

CVE-2017-7870 was published on 2017-04-14 and last updated on 2026-06-17.

CVE-2017-7870

CVE-2017-7870 is a critical-severity vulnerability in Libreoffice with a CVSS 3.x base score of 9.8. 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-787.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
CVSS v2: 7.5
EPSS exploit prediction: 4% (89th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-787
Affected product: Libreoffice
Published: 2017-04-14
Last modified: 2026-06-17

Description

LibreOffice before 2017-01-02 has an out-of-bounds write caused by a heap-based buffer overflow related to the tools::Polygon::Insert function in tools/source/generic/poly.cxx.

Frequently asked questions

What is CVE-2017-7870?: LibreOffice before 2017-01-02 has an out-of-bounds write caused by a heap-based buffer overflow related to the tools::Polygon::Insert function in tools/source/generic/poly.cxx.
How severe is CVE-2017-7870?: CVE-2017-7870 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2017-7870 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 4% (89th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2017-7870?: CVE-2017-7870 affects Libreoffice. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2017-7870?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2017-7870 published?: CVE-2017-7870 was published on 2017-04-14 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:libreoffice:libreoffice:*:beta2:*:*:*:*:*:*

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