CVE-2023-50234: Hancom Office Cell XLS File Parsing Stack-based Buffer Overflow Remote Code Execution Vulnerability

Routine

HIGH 7.8DOWNGRADE

CVE-2023-50234 is a high-severity flaw (CVSS 7.8) affecting office cell. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

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 prope

Why this priority

High severity

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	7.8 (High)
Attack vector	Local
Attack complexity	Low
Privileges needed	None
User interaction	Required
EPSS exploit chance	0.3% (top 73%)
CISA exploited list	No
Weakness	CWE-121, CWE-787
Published	2024-05-03
Last modified	2026-06-17

Publisher (CNA): Zero Day Initiative · Vendor: hancom

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2024-05-03 03:16 UTCPublished CVE record published
2026-06-17 06:39 UTCUpdated Record last modified

hancom office cell DOWNGRADE

Affected: 11.0.0.7123

Fixed in: no fixed release known

Safe to downgrade to: a release before 11.0.0.7123

1. Check installed version

apt-cache policy office-cell || rpm -q office-cell || office-cell --version

2. No fixed release: DOWNGRADE to a release before 11.0.0.7123 (Debian / Ubuntu)

apt-cache madison office-cell sudo apt install office-cell=<VERSION_BEFORE_11.0.0.7123> sudo apt-mark hold office-cell

2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list office-cell sudo dnf downgrade office-cell-<VERSION_BEFORE_11.0.0.7123> sudo dnf versionlock add office-cell

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2023-50234?

office cell: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2023-50234 being exploited?

CVE-2023-50234 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2023-50234 affect?

CVE-2023-50234 affects office cell. Severity is high (CVSS 7.8). 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 r

How urgent is CVE-2023-50234?

Priority 34/100. High severity

References

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