CVE-2021-41738
CVE-2021-41738 is a high-severity vulnerability in Zeroshell with a CVSS 3.x base score of 8.8. 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-78.
Key facts
- Severity: High (CVSS 3.x base score 8.8)
- CVSS v2: 6.5
- EPSS exploit prediction: 2% (75th percentile)
- Actively exploited: Not listed in CISA KEV
- Weakness: CWE-78
- Affected product: Zeroshell
- Published:
- Last modified:
Description
ZeroShell 3.9.5 has a command injection vulnerability in /cgi-bin/kerbynet IP parameter, which may allow an authenticated attacker to execute system commands.
Frequently asked questions
- What is CVE-2021-41738?
- ZeroShell 3.9.5 has a command injection vulnerability in /cgi-bin/kerbynet IP parameter, which may allow an authenticated attacker to execute system commands.
- How severe is CVE-2021-41738?
- CVE-2021-41738 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
- Is CVE-2021-41738 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (75th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2021-41738?
- CVE-2021-41738 affects Zeroshell. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2021-41738?
- 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-2021-41738 published?
- CVE-2021-41738 was published on 2022-06-11 and last updated on 2026-06-17.
References
Affected products (1)
- cpe:2.3:o:zeroshell:zeroshell:3.9.5:*:*:*:*:*:*:*
More vulnerabilities in Zeroshell
- CVE-2009-0545 — Critical (CVSS 10.0): cgi-bin/kerbynet in ZeroShell 1.0beta11 and earlier allows remote attackers to execute arbitrary commands via shell…
- CVE-2020-29390 — Critical (CVSS 9.8): Zeroshell 3.9.3 contains a command injection vulnerability in the /cgi-bin/kerbynet StartSessionSubmit parameter that…
- CVE-2019-12725 — Critical (CVSS 9.8): Zeroshell 3.9.0 is prone to a remote command execution vulnerability. Specifically, this issue occurs because the web…
All CVEs affecting Zeroshell →
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