How severe is CVE-2017-12243?

CVE-2017-12243 has a CVSS 3.x base score of 7.8, rated high severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2017-12243 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 77% (99th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2017-12243?

CVE-2017-12243 primarily affects Cisco Unified Computing System Manager Firmware. In total, 3 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2017-12243?

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-2017-12243 published?

CVE-2017-12243 was published on 2017-11-02 and last updated on 2026-06-17.

CVE-2017-12243

CVE-2017-12243 is a high-severity vulnerability in Cisco Unified Computing System Manager Firmware with a CVSS 3.x base score of 7.8. Its EPSS exploit-prediction score of 77% places it in the 99th percentile, indicating an elevated likelihood of exploitation. The underlying weakness is classified as CWE-78.

Key facts

Severity: High (CVSS 3.x base score 7.8)
CVSS v2: 7.2
EPSS exploit prediction: 77% (99th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-78
Affected product: Cisco Unified Computing System Manager Firmware
Published: 2017-11-02
Last modified: 2026-06-17

Description

A vulnerability in the Cisco Unified Computing System (UCS) Manager, Cisco Firepower 4100 Series Next-Generation Firewall (NGFW), and Cisco Firepower 9300 Security Appliance could allow an authenticated, local attacker to obtain root shell privileges on the device, aka Command Injection. The vulnerability is due to improper validation of string input in the shell application. An attacker could exploit this vulnerability through the use of malicious commands. A successful exploit could allow the attacker to obtain root shell privileges on the device. Cisco Bug IDs: CSCvf20741, CSCvf60078.

Frequently asked questions

What is CVE-2017-12243?: A vulnerability in the Cisco Unified Computing System (UCS) Manager, Cisco Firepower 4100 Series Next-Generation Firewall (NGFW), and Cisco Firepower 9300 Security Appliance could allow an authenticated, local attacker to obtain root shell privileges on the device, aka Command Injection. The vulnerability is due to improper validation of string input in the shell application. An attacker could exploit this vulnerability through the use of malicious commands. A successful exploit could allow the attacker to obtain root shell privileges on the device. Cisco Bug IDs: CSCvf20741, CSCvf60078.
How severe is CVE-2017-12243?: CVE-2017-12243 has a CVSS 3.x base score of 7.8, rated high severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2017-12243 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 77% (99th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2017-12243?: CVE-2017-12243 primarily affects Cisco Unified Computing System Manager Firmware. In total, 3 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2017-12243?: 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-2017-12243 published?: CVE-2017-12243 was published on 2017-11-02 and last updated on 2026-06-17.

References

Affected products (3)

cpe:2.3:o:cisco:unified_computing_system_manager_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:cisco:firepower_9300_security_appliance_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:cisco:firepower_4100_next-generation_firewall_firmware:-:*:*:*:*:*:*:*

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