How severe is CVE-2023-20026?

CVE-2023-20026 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability none.

Is CVE-2023-20026 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (67th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-20026?

CVE-2023-20026 primarily affects Cisco Rv016 Firmware. In total, 4 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2023-20026?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2023-20026 published?

CVE-2023-20026 was published on 2023-01-20 and last updated on 2026-06-17.

CVE-2023-20026

CVE-2023-20026 is a medium-severity vulnerability in Cisco Rv016 Firmware with a CVSS 3.x base score of 6.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-20.

Key facts

Severity: Medium (CVSS 3.x base score 6.5)
EPSS exploit prediction: 1% (67th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-20
Affected product: Cisco Rv016 Firmware
Published: 2023-01-20
Last modified: 2026-06-17

Description

A vulnerability in the web-based management interface of Cisco Small Business RV016, RV042, RV042G, RV082, RV320 and RV325 Routers could allow an authenticated, remote attacker to execute arbitrary commands on an affected device. This vulnerability is due to improper validation of user input within incoming HTTP packets. An attacker could exploit this vulnerability by sending a crafted HTTP request to the web-based management interface. A successful exploit could allow the attacker to gain root-level privileges and access unauthorized data. To exploit this vulnerability, an attacker would need to have valid administrative credentials on the affected device.

Frequently asked questions

What is CVE-2023-20026?: A vulnerability in the web-based management interface of Cisco Small Business RV016, RV042, RV042G, RV082, RV320 and RV325 Routers could allow an authenticated, remote attacker to execute arbitrary commands on an affected device. This vulnerability is due to improper validation of user input within incoming HTTP packets. An attacker could exploit this vulnerability by sending a crafted HTTP request to the web-based management interface. A successful exploit could allow the attacker to gain root-level privileges and access unauthorized data. To exploit this vulnerability, an attacker would need to have valid administrative credentials on the affected device.
How severe is CVE-2023-20026?: CVE-2023-20026 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability none.
Is CVE-2023-20026 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (67th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-20026?: CVE-2023-20026 primarily affects Cisco Rv016 Firmware. In total, 4 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2023-20026?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2023-20026 published?: CVE-2023-20026 was published on 2023-01-20 and last updated on 2026-06-17.

References

https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-sbr042-multi-vuln-ej76Pke5

Affected products (4)

cpe:2.3:o:cisco:rv016_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:cisco:rv042_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:cisco:rv042g_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:cisco:rv082_firmware:-:*:*:*:*:*:*:*

More vulnerabilities in Cisco Rv016 Firmware

CVE-2023-20025 — Critical (CVSS 9.0): A vulnerability in the web-based management interface of Cisco Small Business RV016, RV042, RV042G, and RV082 Routers…
CVE-2020-3296 — High (CVSS 7.2): Multiple vulnerabilities in the web-based management interface of Cisco Small Business RV320 and RV325 Series Routers…
CVE-2020-3295 — High (CVSS 7.2): Multiple vulnerabilities in the web-based management interface of Cisco Small Business RV320 and RV325 Series Routers…
CVE-2020-3294 — High (CVSS 7.2): Multiple vulnerabilities in the web-based management interface of Cisco Small Business RV320 and RV325 Series Routers…
CVE-2020-3293 — High (CVSS 7.2): Multiple vulnerabilities in the web-based management interface of Cisco Small Business RV320 and RV325 Series Routers…
CVE-2020-3292 — High (CVSS 7.2): Multiple vulnerabilities in the web-based management interface of Cisco Small Business RV320 and RV325 Series Routers…

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