How severe is CVE-2018-14939?

CVE-2018-14939 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-2018-14939 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-2018-14939?

CVE-2018-14939 affects Libreoffice. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2018-14939?

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-2018-14939 published?

CVE-2018-14939 was published on 2018-08-05 and last updated on 2026-06-17.

CVE-2018-14939

CVE-2018-14939 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-119.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
CVSS v2: 7.5
EPSS exploit prediction: 2% (81st percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-119
Affected product: Libreoffice
Published: 2018-08-05
Last modified: 2026-06-17

Description

The get_app_path function in desktop/unx/source/start.c in LibreOffice through 6.0.5 mishandles the realpath function in certain environments such as FreeBSD libc, which might allow attackers to cause a denial of service (buffer overflow and application crash) or possibly have unspecified other impact if LibreOffice is automatically launched during web browsing with pathnames controlled by a remote web site.

Frequently asked questions

What is CVE-2018-14939?: The get_app_path function in desktop/unx/source/start.c in LibreOffice through 6.0.5 mishandles the realpath function in certain environments such as FreeBSD libc, which might allow attackers to cause a denial of service (buffer overflow and application crash) or possibly have unspecified other impact if LibreOffice is automatically launched during web browsing with pathnames controlled by a remote web site.
How severe is CVE-2018-14939?: CVE-2018-14939 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-2018-14939 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-2018-14939?: CVE-2018-14939 affects Libreoffice. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2018-14939?: 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-2018-14939 published?: CVE-2018-14939 was published on 2018-08-05 and last updated on 2026-06-17.

References

Affected products (1)

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

More vulnerabilities in Libreoffice

CVE-2014-0247 — Critical (CVSS 10.0): LibreOffice 4.2.4 executes unspecified VBA macros automatically, which has unspecified impact and attack vectors,…
CVE-2024-5261 — Critical (CVSS 9.8): Improper Certificate Validation vulnerability in LibreOffice "LibreOfficeKit" mode disables TLS certification…
CVE-2019-9855 — Critical (CVSS 9.8): LibreOffice is typically bundled with LibreLogo, a programmable turtle vector graphics script, which can execute…
CVE-2019-9851 — Critical (CVSS 9.8): LibreOffice is typically bundled with LibreLogo, a programmable turtle vector graphics script, which can execute…
CVE-2019-9850 — Critical (CVSS 9.8): LibreOffice is typically bundled with LibreLogo, a programmable turtle vector graphics script, which can execute…
CVE-2019-9848 — Critical (CVSS 9.8): LibreOffice has a feature where documents can specify that pre-installed scripts can be executed on various document…

All CVEs affecting Libreoffice →

Other CWE-119 (Improper Restriction of Operations within the Bounds of a Memory Buffer) vulnerabilities

CVE-2026-2778 — Critical (CVSS 10.0): Sandbox escape due to incorrect boundary conditions in the DOM: Core & HTML component. This vulnerability was fixed in…
CVE-2026-2776 — Critical (CVSS 10.0): Sandbox escape due to incorrect boundary conditions in the Telemetry component in External Software. This vulnerability…
CVE-2025-1866 — Critical (CVSS 10.0): Improper Restriction of Operations within the Bounds of a Memory Buffer vulnerability in warmcat libwebsockets allows…
CVE-2022-27625 — Critical (CVSS 10.0): A vulnerability regarding improper restriction of operations within the bounds of a memory buffer is found in the…
CVE-2022-27624 — Critical (CVSS 10.0): A vulnerability regarding improper restriction of operations within the bounds of a memory buffer is found in the…
CVE-2020-11896 — Critical (CVSS 10.0): The Treck TCP/IP stack before 6.0.1.66 allows Remote Code Execution, related to IPv4 tunneling.

Browse all CWE-119 (Improper Restriction of Operations within the Bounds of a Memory Buffer) vulnerabilities →