How severe is CVE-2017-12111?

CVE-2017-12111 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-2017-12111 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (79th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2017-12111?

CVE-2017-12111 affects Libxls Project Libxls. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2017-12111?

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-2017-12111 published?

CVE-2017-12111 was published on 2017-11-20 and last updated on 2026-06-17.

CVE-2017-12111

CVE-2017-12111 is a high-severity vulnerability in Libxls Project Libxls 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-787.

Key facts

Severity: High (CVSS 3.x base score 8.8)
CVSS v2: 6.8
EPSS exploit prediction: 2% (79th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-787
Affected product: Libxls Project Libxls
Published: 2017-11-20
Last modified: 2026-06-17

Description

An exploitable out-of-bounds vulnerability exists in the xls_addCell function of libxls 1.4. A specially crafted XLS file with a formula record can cause memory corruption resulting in remote code execution. An attacker can send a malicious XLS file to trigger this vulnerability.

Frequently asked questions

What is CVE-2017-12111?: An exploitable out-of-bounds vulnerability exists in the xls_addCell function of libxls 1.4. A specially crafted XLS file with a formula record can cause memory corruption resulting in remote code execution. An attacker can send a malicious XLS file to trigger this vulnerability.
How severe is CVE-2017-12111?: CVE-2017-12111 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-2017-12111 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (79th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2017-12111?: CVE-2017-12111 affects Libxls Project Libxls. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2017-12111?: 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-2017-12111 published?: CVE-2017-12111 was published on 2017-11-20 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:libxls_project:libxls:1.4:*:*:*:*:*:*:*

More vulnerabilities in Libxls Project Libxls

CVE-2017-2910 — High (CVSS 8.8): An exploitable Out-of-bounds Write vulnerability exists in the xls_addCell function of libxls 2.0. A specially crafted…
CVE-2018-20452 — High (CVSS 8.8): The read_MSAT_body function in ole.c in libxls 1.4.0 has an invalid free that allows attackers to cause a denial of…
CVE-2017-12109 — High (CVSS 8.8): An exploitable integer overflow vulnerability exists in the xls_preparseWorkSheet function of libxls 1.4 when handling…
CVE-2017-12108 — High (CVSS 8.8): An exploitable integer overflow vulnerability exists in the xls_preparseWorkSheet function of libxls 1.4 when handling…
CVE-2017-12110 — High (CVSS 8.8): An exploitable integer overflow vulnerability exists in the xls_appendSST function of libxls 1.4.A specially crafted…
CVE-2017-2919 — High (CVSS 7.8): An exploitable stack based buffer overflow vulnerability exists in the xls_getfcell function of libxls 1.3.4. A…

All CVEs affecting Libxls Project Libxls →

Other CWE-787 (Out-of-bounds Write) vulnerabilities

CVE-2026-42369 — Critical (CVSS 10.0): GV-VMS V20 is a Video Monitoring Software used to gather the feeds of many surveillance cameras and manage other…
CVE-2026-4746 — Critical (CVSS 10.0): Out-of-bounds Write vulnerability in timeplus-io proton (base/poco/Foundation/src‎ modules). This vulnerability is…
CVE-2025-43300 — Critical (CVSS 10.0): An out-of-bounds write issue was addressed with improved bounds checking. This issue is fixed in iOS 15.8.5 and iPadOS…
CVE-2025-24201 — Critical (CVSS 10.0): An out-of-bounds write issue was addressed with improved checks to prevent unauthorized actions. This issue is fixed in…
CVE-2024-42479 — Critical (CVSS 10.0): llama.cpp provides LLM inference in C/C++. The unsafe `data` pointer member in the `rpc_tensor` structure can cause…
CVE-2024-39791 — Critical (CVSS 10.0): Stack-based buffer overflow vulnerabilities affecting Vonets industrial wifi bridge relays and wifi bridge…

Browse all CWE-787 (Out-of-bounds Write) vulnerabilities →