How severe is CVE-2021-26607?

CVE-2021-26607 has a CVSS 3.x base score of 8.1, 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 none.

Is CVE-2021-26607 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (76th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-26607?

CVE-2021-26607 affects Tobesoft Nexacro. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-26607?

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-2021-26607 published?

CVE-2021-26607 was published on 2021-10-26 and last updated on 2026-06-17.

CVE-2021-26607

CVE-2021-26607 is a high-severity vulnerability in Tobesoft Nexacro with a CVSS 3.x base score of 8.1. 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 8.1)
CVSS v2: 10.0
EPSS exploit prediction: 2% (76th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-20
Affected product: Tobesoft Nexacro
Published: 2021-10-26
Last modified: 2026-06-17

Description

An Improper input validation in execDefaultBrowser method of NEXACRO17 allows a remote attacker to execute arbitrary command on affected systems.

Frequently asked questions

What is CVE-2021-26607?: An Improper input validation in execDefaultBrowser method of NEXACRO17 allows a remote attacker to execute arbitrary command on affected systems.
How severe is CVE-2021-26607?: CVE-2021-26607 has a CVSS 3.x base score of 8.1, 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 none.
Is CVE-2021-26607 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (76th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-26607?: CVE-2021-26607 affects Tobesoft Nexacro. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-26607?: 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-2021-26607 published?: CVE-2021-26607 was published on 2021-10-26 and last updated on 2026-06-17.

References

https://www.boho.or.kr/krcert/secNoticeView.do?bulletin_writing_sequence=36289

Affected products (1)

cpe:2.3:a:tobesoft:nexacro:*:*:*:*:*:*:*:*

More vulnerabilities in Tobesoft Nexacro

CVE-2021-26625 — High (CVSS 8.8): Insufficient Verification of input Data leading to arbitrary file download and execute was discovered in Nexacro…
CVE-2020-7874 — High (CVSS 8.8): Download of code without integrity check vulnerability in NEXACRO14 Runtime ActiveX control of tobesoft Co., Ltd allows…
CVE-2021-26613 — High (CVSS 8.1): improper input validation vulnerability in nexacro permits copying file to the startup folder using rename method.
CVE-2021-26612 — High (CVSS 8.1): An improper input validation leading to arbitrary file creation was discovered in copy method of Nexacro platform.…
CVE-2019-19167 — High (CVSS 7.8): Tobesoft Nexacro v2019.9.25.1 and earlier version have an arbitrary code execution vulnerability by using method…

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