CVE-2021-1306
CVE-2021-1306 is a medium-severity vulnerability in Cisco Evolved Programmable Network Manager with a CVSS 3.x base score of 4.4. 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-610.
Key facts
- Severity: Medium (CVSS 3.x base score 4.4)
- CVSS v2: 3.6
- EPSS exploit prediction: 0% (12th percentile)
- Actively exploited: Not listed in CISA KEV
- Weakness: CWE-610
- Affected product: Cisco Evolved Programmable Network Manager
- Published:
- Last modified:
Description
A vulnerability in the restricted shell of Cisco Evolved Programmable Network (EPN) Manager, Cisco Identity Services Engine (ISE), and Cisco Prime Infrastructure could allow an authenticated, local attacker to identify directories and write arbitrary files to the file system. This vulnerability is due to improper validation of parameters that are sent to a CLI command within the restricted shell. An attacker could exploit this vulnerability by logging in to the device and issuing certain CLI commands. A successful exploit could allow the attacker to identify file directories on the affected device and write arbitrary files to the file system on the affected device. To exploit this vulnerability, the attacker must be an authenticated shell user.
Frequently asked questions
- What is CVE-2021-1306?
- A vulnerability in the restricted shell of Cisco Evolved Programmable Network (EPN) Manager, Cisco Identity Services Engine (ISE), and Cisco Prime Infrastructure could allow an authenticated, local attacker to identify directories and write arbitrary files to the file system. This vulnerability is due to improper validation of parameters that are sent to a CLI command within the restricted shell. An attacker could exploit this vulnerability by logging in to the device and issuing certain CLI commands. A successful exploit could allow the attacker to identify file directories on the affected device and write arbitrary files to the file system on the affected device. To exploit this vulnerability, the attacker must be an authenticated shell user.
- How severe is CVE-2021-1306?
- CVE-2021-1306 has a CVSS 3.x base score of 4.4, rated medium severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability none.
- Is CVE-2021-1306 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (12th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2021-1306?
- CVE-2021-1306 primarily affects Cisco Evolved Programmable Network Manager. In total, 8 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
- How do I fix CVE-2021-1306?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
- When was CVE-2021-1306 published?
- CVE-2021-1306 was published on 2021-05-22 and last updated on 2026-06-17.
References
Affected products (8)
- cpe:2.3:a:cisco:evolved_programmable_network_manager:*:*:*:*:*:*:*:*
- cpe:2.3:a:cisco:identity_services_engine:*:*:*:*:*:*:*:*
- cpe:2.3:a:cisco:identity_services_engine:2.7.0:-:*:*:*:*:*:*
- cpe:2.3:a:cisco:identity_services_engine:2.7.0:patch2:*:*:*:*:*:*
- cpe:2.3:a:cisco:identity_services_engine:3.0.0:-:*:*:*:*:*:*
- cpe:2.3:a:cisco:identity_services_engine:3.0.0:patch1:*:*:*:*:*:*
- cpe:2.3:a:cisco:prime_infrastructure:*:*:*:*:*:*:*:*
- cpe:2.3:a:cisco:prime_infrastructure:3.8.1:-:*:*:*:*:*:*
More vulnerabilities in Cisco Evolved Programmable Network Manager
- CVE-2021-44228 — Critical (CVSS 10.0): Apache Log4j2 2.0-beta9 through 2.15.0 (excluding security releases 2.12.2, 2.12.3, and 2.3.1) JNDI features used in…
- CVE-2019-15958 — Critical (CVSS 9.8): A vulnerability in the REST API of Cisco Prime Infrastructure (PI) and Cisco Evolved Programmable Network Manager…
- CVE-2016-1289 — Critical (CVSS 9.8): The API in Cisco Prime Infrastructure 1.2 through 3.0 and Evolved Programmable Network Manager (EPNM) 1.2 allows remote…
- CVE-2016-1291 — Critical (CVSS 9.8): Cisco Prime Infrastructure 1.2.0 through 2.2(2) and Cisco Evolved Programmable Network Manager (EPNM) 1.2 allow remote…
- CVE-2021-1487 — High (CVSS 8.8): A vulnerability in the web-based management interface of Cisco Prime Infrastructure and Evolved Programmable Network…
- CVE-2019-1823 — High (CVSS 8.8): A vulnerability in the web-based management interface of Cisco Prime Infrastructure (PI) and Cisco Evolved Programmable…
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