CVE-2019-1653 Cisco Small Business RV320 and RV325 Routers: login or permission bypass
In plain words: A door that should be locked is not: part of the system can be reached without a valid login or permission. The attacker gets in as a user or administrator without knowing a password.
Confirmed exploited by CISA on · US federal patch deadline May 3, 2022
What to do
- Install Cisco's security update for Small Business RV320 and RV325 Routers. If no update exists, follow the vendor's workaround or stop using the product until one ships.
- Patch edge devices first — attackers often start scanning for them within hours of a fix.
- Never expose the device's admin page to the internet.
- After patching a device that was exposed, follow the vendor's compromise checks, end active sessions and change passwords.
Who is affected
Work IT. Aimed mostly at company systems — you are affected through the companies you use, not your own phone.
What's at risk: They face the internet and guard the whole network, so a flaw here can hand attackers a way in — and these devices usually run no antivirus, so break-ins go unnoticed.
The details
- Official name
- Cisco Small Business RV320 and RV325 Routers Information Disclosure Vulnerability
- Product
- Cisco Small Business RV320 and RV325 Routers
- CISA description
- Cisco Small Business RV320 and RV325 Dual Gigabit WAN VPN Routers contain improper access controls for URLs. Exploitation could allow an attacker to download the router configuration or detailed diagnostic information.
- Type of flaw
- Login or permission bypass (CWE-284)
- Confirmed exploited
- Nov 3, 2021
- US federal patch deadline
- May 3, 2022
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Answering about CVE-2019-1653 ·
Questions about CVE-2019-1653
Is CVE-2019-1653 being exploited?
Yes. CISA added CVE-2019-1653 to its Known Exploited Vulnerabilities catalog on Nov 3, 2021, which means there is reliable evidence of real-world attacks.
How do I fix CVE-2019-1653?
Install Cisco's security update for Small Business RV320 and RV325 Routers. If no update exists, follow the vendor's workaround or stop using the product until one ships. Patch edge devices first — attackers often start scanning for them within hours of a fix.
Am I affected by CVE-2019-1653?
Only if you use Cisco Small Business RV320 and RV325 Routers. Aimed mostly at company systems — you are affected through the companies you use, not your own phone.