CVE-2021-20017
CVE-2021-20017 is a high-severity vulnerability in Sonicwall Sma100 Firmware 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: 9.0
- EPSS exploit prediction: 2% (77th percentile)
- Actively exploited: Not listed in CISA KEV
- Weakness: CWE-78
- Affected product: Sonicwall Sma100 Firmware
- Published:
- Last modified:
Description
A post-authenticated command injection vulnerability in SonicWall SMA100 allows an authenticated attacker to execute OS commands as a 'nobody' user. This vulnerability impacts SMA100 version 10.2.0.5 and earlier.
Frequently asked questions
- What is CVE-2021-20017?
- A post-authenticated command injection vulnerability in SonicWall SMA100 allows an authenticated attacker to execute OS commands as a 'nobody' user. This vulnerability impacts SMA100 version 10.2.0.5 and earlier.
- How severe is CVE-2021-20017?
- CVE-2021-20017 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-2021-20017 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (77th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2021-20017?
- CVE-2021-20017 affects Sonicwall Sma100 Firmware. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2021-20017?
- 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-2021-20017 published?
- CVE-2021-20017 was published on 2021-03-13 and last updated on 2026-06-17.
References
Affected products (1)
- cpe:2.3:o:sonicwall:sma100_firmware:*:*:*:*:*:*:*:*
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