CVE-2019-15271

CVE-2019-15271 is a high-severity vulnerability in Cisco Rv016 Multi-wan Vpn Firmware with a CVSS 3.x base score of 8.8. It is listed in CISA's Known Exploited Vulnerabilities (KEV) catalog, confirming it has been exploited in the wild (added 2022-06-08). The underlying weakness is classified as CWE-502.

Key facts

Description

A vulnerability in the web-based management interface of certain Cisco Small Business RV Series Routers could allow an authenticated, remote attacker to execute arbitrary commands with root privileges. The attacker must have either a valid credential or an active session token. The vulnerability is due to lack of input validation of the HTTP payload. An attacker could exploit this vulnerability by sending a malicious HTTP request to the web-based management interface of the targeted device. A successful exploit could allow the attacker to execute commands with root privileges.

Frequently asked questions

What is CVE-2019-15271?
A vulnerability in the web-based management interface of certain Cisco Small Business RV Series Routers could allow an authenticated, remote attacker to execute arbitrary commands with root privileges. The attacker must have either a valid credential or an active session token. The vulnerability is due to lack of input validation of the HTTP payload. An attacker could exploit this vulnerability by sending a malicious HTTP request to the web-based management interface of the targeted device. A successful exploit could allow the attacker to execute commands with root privileges.
How severe is CVE-2019-15271?
CVE-2019-15271 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-2019-15271 being actively exploited?
Yes. CVE-2019-15271 is on CISA's Known Exploited Vulnerabilities (KEV) catalog, added on 2022-06-08, which means active exploitation has been confirmed. It should be prioritised for remediation.
What products are affected by CVE-2019-15271?
CVE-2019-15271 primarily affects Cisco Rv016 Multi-wan Vpn Firmware. In total, 4 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2019-15271?
Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Because this CVE is known to be actively exploited, treat remediation as urgent — CISA KEV typically sets a short remediation deadline.
Does CVE-2019-15271 have an EU (EUVD) identifier?
Yes. CVE-2019-15271 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2019-6279. It is also flagged as exploited in the EUVD (since 2022-06-08).
When was CVE-2019-15271 published?
CVE-2019-15271 was published on 2019-11-26 and last updated on 2026-06-17.

References

Affected products (4)

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