CVE-2023-50234
CVE-2023-50234 is a high-severity vulnerability in Hancom Office Cell with a CVSS 3.x base score of 7.8. 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 7.8)
- EPSS exploit prediction: 0% (26th percentile)
- Actively exploited: Not listed in CISA KEV
- EU (EUVD) id: EUVD-2023-55056
- Weakness: CWE-787
- Affected product: Hancom Office Cell
- Published:
- Last modified:
Description
Hancom Office Cell XLS File Parsing Stack-based Buffer Overflow Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of Hancom Office Cell. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file. The specific flaw exists within the parsing of XLS files. The issue results from the lack of proper validation of the length of user-supplied data prior to copying it to a stack-based buffer. An attacker can leverage this vulnerability to execute code in the context of the current process. Was ZDI-CAN-20386.
Frequently asked questions
- What is CVE-2023-50234?
- Hancom Office Cell XLS File Parsing Stack-based Buffer Overflow Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of Hancom Office Cell. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file. The specific flaw exists within the parsing of XLS files. The issue results from the lack of proper validation of the length of user-supplied data prior to copying it to a stack-based buffer. An attacker can leverage this vulnerability to execute code in the context of the current process. Was ZDI-CAN-20386.
- How severe is CVE-2023-50234?
- CVE-2023-50234 has a CVSS 3.x base score of 7.8, rated high severity. It is exploitable over local access with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.
- Is CVE-2023-50234 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (26th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2023-50234?
- CVE-2023-50234 affects Hancom Office Cell. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2023-50234?
- 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.
- Does CVE-2023-50234 have an EU (EUVD) identifier?
- Yes. CVE-2023-50234 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2023-55056.
- When was CVE-2023-50234 published?
- CVE-2023-50234 was published on 2024-05-03 and last updated on 2026-06-17.
References
Affected products (1)
- cpe:2.3:a:hancom:office_cell:11.0.0.7123:*:*:*:*:*:*:*
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