Vulnerability · CVE-2019-15271
Cisco RV Series Routers Deserialization of Untrusted Data Vulnerability
Published Nov 25, 2019 · corrected/updated Jun 16, 2026 · Cisco RV Series Routers · evidence confidence very high
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.
Grounded briefings
Catalog interpretations for three audiences. Each brief cites ingested metadata and the original advisories below. They are not independent research and they do not invent exploit steps.
Executive
CVE-2019-15271 is a high public vulnerability record for Cisco RV Series Routers. CISA lists it as known exploited. Published remediation guidance: Apply updates per vendor instructions. This summary is a catalog interpretation of the ingested metadata and cites the original advisories below.
System administrator
Identify whether Cisco RV Series Routers is in your estate, then compare installed versions with the affected ranges. Affected packages or ranges on record: cisco/rv016 multi-wan vpn firmware; cisco/rv042 dual wan vpn firmware; cisco/rv042g dual gigabit wan vpn firmware; cisco/rv082 dual wan vpn firmware. Published remediation guidance: Apply updates per vendor instructions. Prefer the vendor or distribution advisory linked in Sources before changing production systems. This is a catalog interpretation, not a runbook.
Security analyst
Signals on file: CVSS 8.8, EPSS 5.5%. CISA lists it as known exploited. Weakness classes: CWE-502. Sources contributing to this record: cisa_kev, cve_org, epss, nvd. Public exploit references, when present, are outbound links only and are not proof of active exploitation. This is a catalog interpretation of stored metadata.
Exploitation and remediation
Exploitation evidence
Confirmed in CISA KEV since Jun 7, 2022. Listed in CISA KEV and VulnCheck KEV.
Patch and remediation
Apply updates per vendor instructions. CISA due date Jun 22, 2022.
Safe detection guidance
Compare installed versions with the affected ranges below and verify the advisory from the original publisher. This site stores metadata and outbound links only; it does not ship exploit code or proof-of-concept payloads.
Technology hubs
Code
The project this record applies to. Exploit listings stay in References.
No public source repository is identified for this product.
Timeline
Detection, updates, and resolution for this record.
Nov 25, 2019 · Catalog
Detected
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
Jun 8, 2022 · CISA KEV
Known exploited
Apply updates per vendor instructions.
Jun 22, 2022 · CISA KEV
Remediation due
Apply updates per vendor instructions.
Jun 16, 2026 · Catalog
Updated
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
Affected
- cpe cisco/rv016 multi-wan vpn firmwareversion unspecified
- cpe cisco/rv042 dual wan vpn firmwareversion unspecified
- cpe cisco/rv042g dual gigabit wan vpn firmwareversion unspecified
- cpe cisco/rv082 dual wan vpn firmwareversion unspecified
- vendor Cisco RV Series Routersversion unspecified
Sources
- CISA KEVConfirmed exploitationCVE-2019-15271
A deserialization of untrusted data vulnerability in the web-based management interface of certain Cisco Small Business RV Series Routers could allow an attacker to execute code with root privileges.
cisa.gov - CVE.orgVulnerability recordCVE-2019-15271
Official CVE identifier
cve.org - FIRST EPSSExploitation probabilityCVE-2019-15271
30-day exploitation probability 5.5%
first.org - NIST NVDVulnerability recordCVE-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. T
nvd.nist.gov - VulnCheck KEVConfirmed exploitationCVE-2019-15271
A deserialization of untrusted data vulnerability in the web-based management interface of certain Cisco Small Business RV Series Routers could allow an attacker to execute code with root privileges.
vulncheck.com