CVE-2024-20522 | Cisco Small Business RV042, RV042G, RV320, and RV325 Denial of Service Vulnerabilities

A vulnerability in the web-based management interface of Cisco Small Business RV042, RV042G, RV320, and RV325 Routers could allow an authenticated, Administrator-level, remote attacker to cause an unexpected reload of an affected device, resulting in a denial of service (DoS) condition. To exploit this vulnerability, an attacker would need to have valid Administrator credentials on the affected device.   This vulnerability is due to improper validation of user input that is in incoming HTTP packets. An attacker could exploit this vulnerability by sending a crafted HTTP request to the web-based management interface of the affected device. A successful exploit could allow the attacker to cause an unexpected reload of the device, resulting in a DoS condition.

Published: 2024-10-02 Last update: 2024-10-08 Assigner: [email protected] Source: [email protected]

Conclusion & alert: CVE-2024-20522 is rated Low Risk (39.3/100): CVSS Medium severity, with low exploitation likelihood (EPSS 0.47%). Mandatory action: Monitor for updates and reassess as exploit intelligence or EPSS changes.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2024-20522

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-06-15 0.08% 0.47% +0.39%
2 2025-11-21 0.05% 0.08% +0.04%
3 2025-11-18 0.05%

Full EPSS history (9 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2024-20522

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
6.5 3.1 MEDIUM
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:N Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:H)
They need powerful rights—admin, root, or similar—before this pays off.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:H)
Serious risk that confidential data gets exposed in a big way.
Integrity (I:H)
They could widely tamper with or forge data—trust in the data is badly hurt.
Availability (A:N)
Service keeps running; no real outage angle.
1.2 5.2 [email protected]
6.8 3.1 MEDIUM
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:N/I:N/A:H Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:H)
They need powerful rights—admin, root, or similar—before this pays off.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:C)
Breaking this can reach past the original component and bite other resources—bigger blast radius.
Confidentiality (C:N)
Doesn’t really leak secrets in a meaningful way.
Integrity (I:N)
Data isn’t meaningfully altered or forged.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
2.3 4.0 [email protected]

Weakness enumeration for CVE-2024-20522

Affected software / configurations for CVE-2024-20522

Vendor Product Version Raw CPE
cisco rv042_firmware 1.0.1.17 cpe:2.3:o:cisco:rv042_firmware:1.0.1.17:*:*:*:*:*:*:*
cisco rv042_firmware 1.0.2.03 cpe:2.3:o:cisco:rv042_firmware:1.0.2.03:*:*:*:*:*:*:*
cisco rv042_firmware 1.1.0.09 cpe:2.3:o:cisco:rv042_firmware:1.1.0.09:*:*:*:*:*:*:*
cisco rv042_firmware 1.1.1.06 cpe:2.3:o:cisco:rv042_firmware:1.1.1.06:*:*:*:*:*:*:*
cisco rv042_firmware 1.1.1.19 cpe:2.3:o:cisco:rv042_firmware:1.1.1.19:*:*:*:*:*:*:*
cisco rv042_firmware 1.2.1.13 cpe:2.3:o:cisco:rv042_firmware:1.2.1.13:*:*:*:*:*:*:*
cisco rv042_firmware 1.2.1.14 cpe:2.3:o:cisco:rv042_firmware:1.2.1.14:*:*:*:*:*:*:*
cisco rv042_firmware 1.3.1.10 cpe:2.3:o:cisco:rv042_firmware:1.3.1.10:*:*:*:*:*:*:*
cisco rv042_firmware 1.3.1.12 cpe:2.3:o:cisco:rv042_firmware:1.3.1.12:*:*:*:*:*:*:*
cisco rv042_firmware 1.3.2.02 cpe:2.3:o:cisco:rv042_firmware:1.3.2.02:*:*:*:*:*:*:*
cisco rv042_firmware 1.3.12.6-tm cpe:2.3:o:cisco:rv042_firmware:1.3.12.6-tm:*:*:*:*:*:*:*
cisco rv042_firmware 1.3.12.19-tm cpe:2.3:o:cisco:rv042_firmware:1.3.12.19-tm:*:*:*:*:*:*:*
cisco rv042_firmware 1.3.13.02-tm cpe:2.3:o:cisco:rv042_firmware:1.3.13.02-tm:*:*:*:*:*:*:*
cisco rv042_firmware 1.4.2.15 cpe:2.3:o:cisco:rv042_firmware:1.4.2.15:*:*:*:*:*:*:*
cisco rv042_firmware 1.4.2.17 cpe:2.3:o:cisco:rv042_firmware:1.4.2.17:*:*:*:*:*:*:*
cisco rv042_firmware 1.4.2.19 cpe:2.3:o:cisco:rv042_firmware:1.4.2.19:*:*:*:*:*:*:*
cisco rv042_firmware 1.4.2.20 cpe:2.3:o:cisco:rv042_firmware:1.4.2.20:*:*:*:*:*:*:*
cisco rv042_firmware 1.4.2.22 cpe:2.3:o:cisco:rv042_firmware:1.4.2.22:*:*:*:*:*:*:*
cisco rv042_firmware 1.5.1.05 cpe:2.3:o:cisco:rv042_firmware:1.5.1.05:*:*:*:*:*:*:*
cisco rv042_firmware 1.5.1.11 cpe:2.3:o:cisco:rv042_firmware:1.5.1.11:*:*:*:*:*:*:*
cisco rv042_firmware 1.5.1.13 cpe:2.3:o:cisco:rv042_firmware:1.5.1.13:*:*:*:*:*:*:*
cisco rv042_firmware 3.0.0.1-tm cpe:2.3:o:cisco:rv042_firmware:3.0.0.1-tm:*:*:*:*:*:*:*
cisco rv042_firmware 3.0.0.19-tm cpe:2.3:o:cisco:rv042_firmware:3.0.0.19-tm:*:*:*:*:*:*:*
cisco rv042_firmware 3.0.2.01-tm cpe:2.3:o:cisco:rv042_firmware:3.0.2.01-tm:*:*:*:*:*:*:*
cisco rv042_firmware 4.0.0.7 cpe:2.3:o:cisco:rv042_firmware:4.0.0.7:*:*:*:*:*:*:*
cisco rv042_firmware 4.0.2.08-tm cpe:2.3:o:cisco:rv042_firmware:4.0.2.08-tm:*:*:*:*:*:*:*
cisco rv042_firmware 4.0.3.03-tm cpe:2.3:o:cisco:rv042_firmware:4.0.3.03-tm:*:*:*:*:*:*:*
cisco rv042_firmware 4.0.4.02-tm cpe:2.3:o:cisco:rv042_firmware:4.0.4.02-tm:*:*:*:*:*:*:*
cisco rv042_firmware 4.1.0.02-tm cpe:2.3:o:cisco:rv042_firmware:4.1.0.02-tm:*:*:*:*:*:*:*
cisco rv042_firmware 4.1.1.01 cpe:2.3:o:cisco:rv042_firmware:4.1.1.01:*:*:*:*:*:*:*
cisco rv042_firmware 4.2.1.02 cpe:2.3:o:cisco:rv042_firmware:4.2.1.02:*:*:*:*:*:*:*
cisco rv042_firmware 4.2.2.08 cpe:2.3:o:cisco:rv042_firmware:4.2.2.08:*:*:*:*:*:*:*
cisco rv042_firmware 4.2.3.03 cpe:2.3:o:cisco:rv042_firmware:4.2.3.03:*:*:*:*:*:*:*
cisco rv042_firmware 4.2.3.06 cpe:2.3:o:cisco:rv042_firmware:4.2.3.06:*:*:*:*:*:*:*
cisco rv042_firmware 4.2.3.07 cpe:2.3:o:cisco:rv042_firmware:4.2.3.07:*:*:*:*:*:*:*
cisco rv042_firmware 4.2.3.08 cpe:2.3:o:cisco:rv042_firmware:4.2.3.08:*:*:*:*:*:*:*
cisco rv042_firmware 4.2.3.09 cpe:2.3:o:cisco:rv042_firmware:4.2.3.09:*:*:*:*:*:*:*
cisco rv042_firmware 4.2.3.10 cpe:2.3:o:cisco:rv042_firmware:4.2.3.10:*:*:*:*:*:*:*
cisco rv042_firmware 4.2.3.14 cpe:2.3:o:cisco:rv042_firmware:4.2.3.14:*:*:*:*:*:*:*
cisco rv042g_firmware 1.0.1.17 cpe:2.3:o:cisco:rv042g_firmware:1.0.1.17:*:*:*:*:*:*:*
cisco rv042g_firmware 1.0.2.03 cpe:2.3:o:cisco:rv042g_firmware:1.0.2.03:*:*:*:*:*:*:*
cisco rv042g_firmware 1.1.0.09 cpe:2.3:o:cisco:rv042g_firmware:1.1.0.09:*:*:*:*:*:*:*
cisco rv042g_firmware 1.1.1.06 cpe:2.3:o:cisco:rv042g_firmware:1.1.1.06:*:*:*:*:*:*:*
cisco rv042g_firmware 1.1.1.19 cpe:2.3:o:cisco:rv042g_firmware:1.1.1.19:*:*:*:*:*:*:*
cisco rv042g_firmware 1.2.1.13 cpe:2.3:o:cisco:rv042g_firmware:1.2.1.13:*:*:*:*:*:*:*
cisco rv042g_firmware 1.2.1.14 cpe:2.3:o:cisco:rv042g_firmware:1.2.1.14:*:*:*:*:*:*:*
cisco rv042g_firmware 1.3.1.10 cpe:2.3:o:cisco:rv042g_firmware:1.3.1.10:*:*:*:*:*:*:*
cisco rv042g_firmware 1.3.1.12 cpe:2.3:o:cisco:rv042g_firmware:1.3.1.12:*:*:*:*:*:*:*
cisco rv042g_firmware 1.3.2.02 cpe:2.3:o:cisco:rv042g_firmware:1.3.2.02:*:*:*:*:*:*:*
cisco rv042g_firmware 1.3.12.6-tm cpe:2.3:o:cisco:rv042g_firmware:1.3.12.6-tm:*:*:*:*:*:*:*
cisco rv042g_firmware 1.3.12.19-tm cpe:2.3:o:cisco:rv042g_firmware:1.3.12.19-tm:*:*:*:*:*:*:*
cisco rv042g_firmware 1.3.13.02-tm cpe:2.3:o:cisco:rv042g_firmware:1.3.13.02-tm:*:*:*:*:*:*:*
cisco rv042g_firmware 1.4.2.15 cpe:2.3:o:cisco:rv042g_firmware:1.4.2.15:*:*:*:*:*:*:*
cisco rv042g_firmware 1.4.2.17 cpe:2.3:o:cisco:rv042g_firmware:1.4.2.17:*:*:*:*:*:*:*
cisco rv042g_firmware 1.4.2.19 cpe:2.3:o:cisco:rv042g_firmware:1.4.2.19:*:*:*:*:*:*:*
cisco rv042g_firmware 1.4.2.20 cpe:2.3:o:cisco:rv042g_firmware:1.4.2.20:*:*:*:*:*:*:*
cisco rv042g_firmware 1.4.2.22 cpe:2.3:o:cisco:rv042g_firmware:1.4.2.22:*:*:*:*:*:*:*
cisco rv042g_firmware 1.5.1.05 cpe:2.3:o:cisco:rv042g_firmware:1.5.1.05:*:*:*:*:*:*:*
cisco rv042g_firmware 1.5.1.11 cpe:2.3:o:cisco:rv042g_firmware:1.5.1.11:*:*:*:*:*:*:*
cisco rv042g_firmware 1.5.1.13 cpe:2.3:o:cisco:rv042g_firmware:1.5.1.13:*:*:*:*:*:*:*
cisco rv042g_firmware 3.0.0.1-tm cpe:2.3:o:cisco:rv042g_firmware:3.0.0.1-tm:*:*:*:*:*:*:*
cisco rv042g_firmware 3.0.0.19-tm cpe:2.3:o:cisco:rv042g_firmware:3.0.0.19-tm:*:*:*:*:*:*:*
cisco rv042g_firmware 3.0.2.01-tm cpe:2.3:o:cisco:rv042g_firmware:3.0.2.01-tm:*:*:*:*:*:*:*
cisco rv042g_firmware 4.0.0.7 cpe:2.3:o:cisco:rv042g_firmware:4.0.0.7:*:*:*:*:*:*:*
cisco rv042g_firmware 4.0.2.08-tm cpe:2.3:o:cisco:rv042g_firmware:4.0.2.08-tm:*:*:*:*:*:*:*
cisco rv042g_firmware 4.0.3.03-tm cpe:2.3:o:cisco:rv042g_firmware:4.0.3.03-tm:*:*:*:*:*:*:*
cisco rv042g_firmware 4.0.4.02-tm cpe:2.3:o:cisco:rv042g_firmware:4.0.4.02-tm:*:*:*:*:*:*:*
cisco rv042g_firmware 4.1.0.02-tm cpe:2.3:o:cisco:rv042g_firmware:4.1.0.02-tm:*:*:*:*:*:*:*
cisco rv042g_firmware 4.1.1.01 cpe:2.3:o:cisco:rv042g_firmware:4.1.1.01:*:*:*:*:*:*:*
cisco rv042g_firmware 4.2.1.02 cpe:2.3:o:cisco:rv042g_firmware:4.2.1.02:*:*:*:*:*:*:*
cisco rv042g_firmware 4.2.2.08 cpe:2.3:o:cisco:rv042g_firmware:4.2.2.08:*:*:*:*:*:*:*
cisco rv042g_firmware 4.2.3.03 cpe:2.3:o:cisco:rv042g_firmware:4.2.3.03:*:*:*:*:*:*:*
cisco rv042g_firmware 4.2.3.06 cpe:2.3:o:cisco:rv042g_firmware:4.2.3.06:*:*:*:*:*:*:*
cisco rv042g_firmware 4.2.3.07 cpe:2.3:o:cisco:rv042g_firmware:4.2.3.07:*:*:*:*:*:*:*
cisco rv042g_firmware 4.2.3.08 cpe:2.3:o:cisco:rv042g_firmware:4.2.3.08:*:*:*:*:*:*:*
cisco rv042g_firmware 4.2.3.09 cpe:2.3:o:cisco:rv042g_firmware:4.2.3.09:*:*:*:*:*:*:*
cisco rv042g_firmware 4.2.3.10 cpe:2.3:o:cisco:rv042g_firmware:4.2.3.10:*:*:*:*:*:*:*
cisco rv042g_firmware 4.2.3.14 cpe:2.3:o:cisco:rv042g_firmware:4.2.3.14:*:*:*:*:*:*:*
cisco rv320_firmware 1.0.1.17 cpe:2.3:o:cisco:rv320_firmware:1.0.1.17:*:*:*:*:*:*:*
cisco rv320_firmware 1.0.2.03 cpe:2.3:o:cisco:rv320_firmware:1.0.2.03:*:*:*:*:*:*:*

References for CVE-2024-20522

cvelogic Threat Intelligence