CVE-2021-1266
CVE-2021-1266 is a medium-severity vulnerability in Cisco Managed Services Accelerator with a CVSS 3.x base score of 4.3. 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-400.
Key facts
- Severity: Medium (CVSS 3.x base score 4.3)
- CVSS v2: 6.8
- EPSS exploit prediction: 1% (63rd percentile)
- Actively exploited: Not listed in CISA KEV
- Weakness: CWE-400
- Affected product: Cisco Managed Services Accelerator
- Published:
- Last modified:
Description
A vulnerability in the REST API of Cisco Managed Services Accelerator (MSX) could allow an authenticated, remote attacker to cause a denial of service (DoS) condition on an affected device. The vulnerability is due to the way that the affected software logs certain API requests. An attacker could exploit this vulnerability by sending a flood of crafted API requests to an affected device. A successful exploit could allow the attacker to cause a DoS condition on the affected device.
Frequently asked questions
- What is CVE-2021-1266?
- A vulnerability in the REST API of Cisco Managed Services Accelerator (MSX) could allow an authenticated, remote attacker to cause a denial of service (DoS) condition on an affected device. The vulnerability is due to the way that the affected software logs certain API requests. An attacker could exploit this vulnerability by sending a flood of crafted API requests to an affected device. A successful exploit could allow the attacker to cause a DoS condition on the affected device.
- How severe is CVE-2021-1266?
- CVE-2021-1266 has a CVSS 3.x base score of 4.3, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability low.
- Is CVE-2021-1266 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (63rd percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2021-1266?
- CVE-2021-1266 affects Cisco Managed Services Accelerator. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2021-1266?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
- When was CVE-2021-1266 published?
- CVE-2021-1266 was published on 2021-02-04 and last updated on 2026-06-17.
References
Affected products (1)
- cpe:2.3:a:cisco:managed_services_accelerator:*:*:*:*:*:*:*:*
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