How severe is CVE-2021-26606?

CVE-2021-26606 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2021-26606 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (82nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-26606?

CVE-2021-26606 affects Dreamsecurity Magicline4nx.exe. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-26606?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

When was CVE-2021-26606 published?

CVE-2021-26606 was published on 2021-08-06 and last updated on 2026-06-17.

CVE-2021-26606

CVE-2021-26606 is a critical-severity vulnerability in Dreamsecurity Magicline4nx.exe with a CVSS 3.x base score of 9.8. 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-20.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
CVSS v2: 10.0
EPSS exploit prediction: 2% (82nd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-20
Affected product: Dreamsecurity Magicline4nx.exe
Published: 2021-08-06
Last modified: 2026-06-17

Description

A vulnerability in PKI Security Solution of Dream Security could allow arbitrary command execution. This vulnerability is due to insufficient validation of the authorization certificate. An attacker could exploit this vulnerability by sending a crafted HTTP request an affected program. A successful exploit could allow the attacker to remotely execute arbitrary code on a target system.

Frequently asked questions

What is CVE-2021-26606?: A vulnerability in PKI Security Solution of Dream Security could allow arbitrary command execution. This vulnerability is due to insufficient validation of the authorization certificate. An attacker could exploit this vulnerability by sending a crafted HTTP request an affected program. A successful exploit could allow the attacker to remotely execute arbitrary code on a target system.
How severe is CVE-2021-26606?: CVE-2021-26606 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2021-26606 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (82nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-26606?: CVE-2021-26606 affects Dreamsecurity Magicline4nx.exe. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-26606?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2021-26606 published?: CVE-2021-26606 was published on 2021-08-06 and last updated on 2026-06-17.

References

https://boho.or.kr/krcert/secNoticeView.do?bulletin_writing_sequence=36174

Affected products (1)

cpe:2.3:a:dreamsecurity:magicline4nx.exe:*:*:*:*:*:*:*:*

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