CVE-2020-3211
CVE-2020-3211 is a high-severity vulnerability in Cisco Ios Xe with a CVSS 3.x base score of 7.2. 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 7.2)
- CVSS v2: 9.0
- EPSS exploit prediction: 4% (88th percentile)
- Actively exploited: Not listed in CISA KEV
- Weakness: CWE-78
- Affected product: Cisco Ios Xe
- Published:
- Last modified:
Description
A vulnerability in the web UI of Cisco IOS XE Software could allow an authenticated, remote attacker to execute arbitrary commands with root privileges on the underlying operating system of an affected device. The vulnerability is due to improper input sanitization. An attacker who has valid administrative access to an affected device could exploit this vulnerability by supplying a crafted input parameter on a form in the web UI and then submitting that form. A successful exploit could allow the attacker to execute arbitrary commands with root privileges on the device, which could lead to complete system compromise.
Frequently asked questions
- What is CVE-2020-3211?
- A vulnerability in the web UI of Cisco IOS XE Software could allow an authenticated, remote attacker to execute arbitrary commands with root privileges on the underlying operating system of an affected device. The vulnerability is due to improper input sanitization. An attacker who has valid administrative access to an affected device could exploit this vulnerability by supplying a crafted input parameter on a form in the web UI and then submitting that form. A successful exploit could allow the attacker to execute arbitrary commands with root privileges on the device, which could lead to complete system compromise.
- How severe is CVE-2020-3211?
- CVE-2020-3211 has a CVSS 3.x base score of 7.2, rated high severity. It is exploitable over network with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
- Is CVE-2020-3211 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 4% (88th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2020-3211?
- CVE-2020-3211 primarily affects Cisco Ios Xe. In total, 16 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
- How do I fix CVE-2020-3211?
- 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-2020-3211 published?
- CVE-2020-3211 was published on 2020-06-03 and last updated on 2026-06-17.
References
Affected products (16)
- cpe:2.3:o:cisco:ios_xe:16.10.1:*:*:*:*:*:*:*
- cpe:2.3:o:cisco:ios_xe:16.10.1a:*:*:*:*:*:*:*
- cpe:2.3:o:cisco:ios_xe:16.10.1b:*:*:*:*:*:*:*
- cpe:2.3:o:cisco:ios_xe:16.10.1e:*:*:*:*:*:*:*
- cpe:2.3:o:cisco:ios_xe:16.10.1s:*:*:*:*:*:*:*
- cpe:2.3:o:cisco:ios_xe:16.10.2:*:*:*:*:*:*:*
- cpe:2.3:o:cisco:ios_xe:16.11.1:*:*:*:*:*:*:*
- cpe:2.3:o:cisco:ios_xe:16.11.1a:*:*:*:*:*:*:*
- cpe:2.3:o:cisco:ios_xe:16.11.1b:*:*:*:*:*:*:*
- cpe:2.3:o:cisco:ios_xe:16.11.1c:*:*:*:*:*:*:*
- cpe:2.3:o:cisco:ios_xe:16.11.1s:*:*:*:*:*:*:*
- cpe:2.3:o:cisco:ios_xe:16.12.1:*:*:*:*:*:*:*
- cpe:2.3:o:cisco:ios_xe:16.12.1a:*:*:*:*:*:*:*
- cpe:2.3:o:cisco:ios_xe:16.12.1c:*:*:*:*:*:*:*
- cpe:2.3:o:cisco:ios_xe:16.12.1s:*:*:*:*:*:*:*
- cpe:2.3:o:cisco:ios_xe:16.12.1t:*:*:*:*:*:*:*
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