How severe is CVE-2021-26618?

CVE-2021-26618 has a CVSS 3.x base score of 7.1, 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 none.

Is CVE-2021-26618 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (58th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-26618?

CVE-2021-26618 affects Tmax Tooffice. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-26618?

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-2021-26618 published?

CVE-2021-26618 was published on 2022-02-18 and last updated on 2026-06-17.

CVE-2021-26618

CVE-2021-26618 is a high-severity vulnerability in Tmax Tooffice with a CVSS 3.x base score of 7.1. 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-20.

Key facts

Severity: High (CVSS 3.x base score 7.1)
CVSS v2: 7.5
EPSS exploit prediction: 1% (58th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-20
Affected product: Tmax Tooffice
Published: 2022-02-18
Last modified: 2026-06-17

Description

An improper input validation leading to arbitrary file creation was discovered in ToWord of ToOffice. Remote attackers use this vulnerability to execute arbitrary file included malicious code.

Frequently asked questions

What is CVE-2021-26618?: An improper input validation leading to arbitrary file creation was discovered in ToWord of ToOffice. Remote attackers use this vulnerability to execute arbitrary file included malicious code.
How severe is CVE-2021-26618?: CVE-2021-26618 has a CVSS 3.x base score of 7.1, 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 none.
Is CVE-2021-26618 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (58th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-26618?: CVE-2021-26618 affects Tmax Tooffice. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-26618?: 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-2021-26618 published?: CVE-2021-26618 was published on 2022-02-18 and last updated on 2026-06-17.

References

https://www.krcert.or.kr/krcert/secNoticeView.do?bulletin_writing_sequence=36456

Affected products (1)

cpe:2.3:a:tmax:tooffice:*:*:*:*:*:*:*:*

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