CVE-2019-15271

Cisco Small Business RV016, RV042, RV042G, and RV082 Routers Arbitrary Command Execution Vulnerability

HIGH
8.8
CVSS Score
Published: November 26, 2019 at 03:12 AM UTC
Updated: June 17, 2026 at 02:19 AM UTC
9 products affected across 1 vendorRV042G Dual Gigabit WAN VPN FirmwareRV016 Multi WAN VPN FirmwareRV082 Dual WAN VPN Firmware

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Severity
HIGH8.8
Exploitation
CISA KEV
Exploit prediction
EPSS 5%
SSVC
Active

Actively Exploited

CISA Known Exploited Vulnerabilities (KEV) Catalog

EPSS Score5.5%

EPSS (Exploit Prediction Scoring System) estimates a 5.5% chance this CVE is exploited in the wild within the next 30 days — higher than 93% of all CVEs. It complements CVSS: a high EPSS on a mid-severity CVE can still be urgent.

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.

Required Action
Apply updates per vendor instructions.
Ransomware Use
Unknown
Added to KEV
Jun 8, 2022
Remediation Due
Jun 22, 2022
1590 days overdue

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

v < 4.2.3.10
Affected range stops below 4.2.3.10, so it looks safe — our inference, not a vendor statement
cisco-rv016-multi-wan-vpn (same device)
v < 4.2.3.10
Affected range stops below 4.2.3.10, so it looks safe — our inference, not a vendor statement
cisco-rv042-dual-wan-vpn (same device)
v < 4.2.3.10
Affected range stops below 4.2.3.10, so it looks safe — our inference, not a vendor statement
cisco-rv042g-dual-gigabit-wan-vpn (same device)
v < 4.2.3.10
Affected range stops below 4.2.3.10, so it looks safe — our inference, not a vendor statement
cisco-rv082-dual-wan-vpn (same device)
All versions
All versions
All versions

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

SSVC — Action Prioritization

SSVCActiveNot automatableTotal impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

Attack Vector
NETWORK
Complexity
LOW
Privileges
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
Vector?

Quick Info

StatusANALYZED
CWE
CWE-502

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