How severe is CVE-2019-1652?

CVE-2019-1652 has a CVSS score of 7.2/10, rated HIGH. Immediate patching is strongly recommended.

Which products are affected by CVE-2019-1652?

Affected package information for CVE-2019-1652 is not yet fully mapped. Check the official advisory links for details.

How do I patch CVE-2019-1652?

Apply the cisco rv320 firmware security patch or hotfix for CVE-2019-1652 on the affected version, following the vendor advisory for your exact build.

How do I detect CVE-2019-1652 across my infrastructure?

Inventory every cisco rv320 firmware deployment and check each version against the affected-products list above. Because the exploit targets the running system rather than your application code, also watch for exploitation at the network and runtime layer — O3 flags the exploit behaviour from runtime telemetry and egress traffic even before a vulnerable build is confirmed.

How do I mitigate CVE-2019-1652 if there is no patch (or I can't update yet)?

Cut exposure now: restrict the management/admin interface to trusted networks, segment the device, and apply the vendor's recommended configuration mitigations and any WAF/IPS signature. O3's runtime protection blocks the exploit chain at execution, holding the line on unpatched or end-of-life systems until you can patch.

How does O3 Security protect against CVE-2019-1652?

O3 detects and blocks CVE-2019-1652 exploitation at runtime: eBPF exploit-chain detection, plus L7 egress monitoring that catches the post-exploitation callback and severs the attacker's outbound channel.

Is CVE-2019-1652 actively exploited in the wild?

Yes. There are 13 known exploit references for CVE-2019-1652, including 2 documented proof-of-concept exploits on Exploit-DB and 10 in-the-wild exploitations observed on GitHub and other sources. Treat this as actively exploitable and prioritize patching immediately. All exploit code should only be run in an isolated sandbox environment for research or authorized testing — never against production systems without explicit written authorization.

What is the EPSS score for CVE-2019-1652?

CVE-2019-1652 has an EPSS (Exploit Prediction Scoring System) score of 95.9%, placing it in the 100th percentile of all CVEs. EPSS is maintained by FIRST.org and estimates the probability that a vulnerability will be exploited in the wild within the next 30 days. A score above 50% indicates significantly elevated exploitation risk — immediate patching is strongly recommended.

Is CVE-2019-1652 in the CISA Known Exploited Vulnerabilities catalog?

Yes. CVE-2019-1652 (Cisco Small Business Routers Improper Input Validation Vulnerability) was added to CISA's Known Exploited Vulnerabilities (KEV) catalog on 2022-03-03. CISA required all US federal civilian agencies to remediate this vulnerability by 2022-03-17. The required action was: Apply updates per vendor instructions. Being listed in the KEV catalog is the strongest possible confirmation of active exploitation — treat this as a critical priority.

What type of vulnerability is CVE-2019-1652?

CVE-2019-1652 is classified as Improper Input Validation (CWE-20), OS Command Injection (CWE-78). These weakness types describe the underlying flaw category, which helps determine the potential impact and the right class of mitigation. This is a high-impact weakness class that often enables remote code execution or data exposure.

Which products and versions are affected by CVE-2019-1652?

CVE-2019-1652 affects cisco rv320 firmware; cisco rv325 firmware. Check the affected-products list on this page against your deployed version to confirm exposure.

Is there exploit tooling available for CVE-2019-1652?

A Metasploit module references CVE-2019-1652, which lowers the barrier to weaponization. Public exploit tooling significantly increases real-world risk — prioritize patching and ensure detection coverage. Exploit tooling should only ever be used in isolated, authorized testing environments.

When was CVE-2019-1652 published, and has it been updated?

CVE-2019-1652 was published on January 24, 2019 and was last updated on June 17, 2026. Advisory data evolves as severity scores, affected ranges, and exploit intelligence are revised — always check the latest version of the advisory before acting.

CISA KEV·Added 2022-03-03 — agencies required to remediate by 2022-03-17

CVE-2019-1652

HIGH

A vulnerability in the web-based management interface of Cisco Small Business RV320 and RV325 Dual Gigabit WAN VPN Routers could allow an authenticated, remote attacker with administrative…

Published

Jan 24, 2019

Updated

Jun 17, 2026

Affected

0 pkgs

Patched

None yet

Exploits

13 known

EPSS Exploitation Probability

via FIRST.org ↗

95.9%probability of exploitation in next 30 days

Very High Risk100th percentile0.00%

EPSS (Exploit Prediction Scoring System) is a daily probability model maintained by FIRST.org. It estimates the likelihood a CVE will be exploited in production environments within the next 30 days, derived from real-world threat intelligence signals.

Description

A vulnerability in the web-based management interface of Cisco Small Business RV320 and RV325 Dual Gigabit WAN VPN Routers could allow an authenticated, remote attacker with administrative privileges on an affected device to execute arbitrary commands. The vulnerability is due to improper validation of user-supplied input. An attacker could exploit this vulnerability by sending malicious HTTP POST requests to the web-based management interface of an affected device. A successful exploit could allow the attacker to execute arbitrary commands on the underlying Linux shell as root. Cisco has released firmware updates that address this vulnerability.

Affected Products

2 products · 2 configurations

rv320 firmwarecisco

≥ 1.4.2.15 && < 1.4.2.22

range

rv325 firmwarecisco

≥ 1.4.2.15 && < 1.4.2.22

range

Exploits & PoCs

Research use only. For defensive security, authorized penetration testing, and academic research only. Never execute exploit code against systems without explicit written authorization.

EDB-46655remotehardware✓ Verified

Cisco RV320 and RV325 - Unauthenticated Remote Code Execution (Metasploit)

by Metasploit · Apr 3, 2019

Exploit-DB Source

EDB-46243webappshardware✓ Verified

Cisco RV320 Dual Gigabit WAN VPN Router 1.4.2.15 - Command Injection

by RedTeam Pentesting · Jan 25, 2019

Exploit-DB Source

Detection & mitigation playbook

Vendor / appliance

Detect
Inventory every cisco rv320 firmware deployment and check each version against the affected-products list above. Because the exploit targets the running system rather than your application code, also watch for exploitation at the network and runtime layer — O3 flags the exploit behaviour from runtime telemetry and egress traffic even before a vulnerable build is confirmed.
Fix
Apply the cisco rv320 firmware security patch or hotfix for CVE-2019-1652 on the affected version, following the vendor advisory for your exact build.
Workarounds
Cut exposure now: restrict the management/admin interface to trusted networks, segment the device, and apply the vendor's recommended configuration mitigations and any WAF/IPS signature. O3's runtime protection blocks the exploit chain at execution, holding the line on unpatched or end-of-life systems until you can patch.
How O3 protects you
O3 detects and blocks CVE-2019-1652 exploitation at runtime: eBPF exploit-chain detection, plus L7 egress monitoring that catches the post-exploitation callback and severs the attacker's outbound channel.

Tailored to CVE-2019-1652. Runtime protection reduces exposure until a permanent patch is applied and verified — it complements patching, it doesn't replace it.

Frequently Asked Questions

O3 Security · Runtime Protection

Is CVE-2019-1652 being exploited in your environment?

O3's eBPF runtime sensors and L7 egress monitoring detect and block the CVE-2019-1652 exploit chain at execution — protecting unpatched and end-of-life systems until the vendor patch is applied.

Protect my workloads How runtime protection works