Root code execution via web-interface stack overflow
Published Sep 6, 2023 · Updated Dec 16, 2025
Stack-based buffer overflow in Cisco RV router web management allows remote authenticated users to execute arbitrary code with root privileges. The interface improperly validates a crafted management request, allowing attacker-controlled data to overflow a stack buffer. Valid Administrator credentials are required; the interface is always reachable from the LAN and is WAN-reachable only when remote management is enabled.
Summary
What happened
Stack-based buffer overflow in Cisco RV router web management allows remote authenticated users to execute arbitrary code with root privileges. The interface improperly validates a crafted management request, allowing attacker-controlled data to overflow a stack buffer. Valid Administrator credentials are required; the interface is always reachable from the LAN and is WAN-reachable only when remote management is enabled.
The record
- CVE
- CVE-2023-20250
- Published
- Sep 6, 2023
- Updated
- Dec 16, 2025
- Vendor
- ClamAV
- Product
- Cisco Small Business RV Series Router Firmware
- Classifications
- CWE-787, CWE-121, T1190
- Attack vector
- network
- Privileges
- admin
Timeline
How it unfolded
- Sep 6, 2023CVE publishedPublication date reported by the CVE source.
- Dec 16, 2025Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
Compare your product and version with the public record. A matching version still requires validation against your environment.
Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=1.0.0.2
- Affected versionversion=1.0.0.21
- Affected versionversion=1.0.0.2 <=1.0.3.55
- Affected versionversion=1.0.0.30
- Affected versionversion=1.0.1.1
- Affected versionversion=1.0.1.3
- Affected versionversion=1.0.1.6
- Affected versionversion=1.0.1.99
- Affected versionversion=1.0.2.7
- Affected versionversion=1.0.2.99
- Affected versionversion=1.0.3.14
- Affected versionversion=1.0.3.16
- Affected versionversion=1.0.3.22
- Affected versionversion=1.0.3.28
- Affected versionversion=1.0.3.44
- Affected versionversion=1.0.3.45
- Affected versionversion=1.0.3.51
- Affected versionversion=1.0.3.52
- Affected versionversion=1.0.3.54
- Affected versionversion=1.0.3.55
- Affected versionversion=1.1.0.5
- Affected versionversion=1.1.0.5 <=1.1.0.9
- Affected versionversion=1.1.0.6
- Affected versionversion=1.1.0.9
- Affected versionversion=1.2.0.10
- Affected versionversion=1.2.0.14
- Affected versionversion=1.2.0.15
- Affected versionversion=1.2.0.8
- Affected versionversion=1.2.0.8 <=1.2.2.8
- Affected versionversion=1.2.0.9
- Affected versionversion=1.2.0.99
- Affected versionversion=1.2.1.4
- Affected versionversion=1.2.1.7
- Affected versionversion=1.2.2.1
- Affected versionversion=1.2.2.4
- Affected versionversion=1.2.2.5
- Affected versionversion=1.2.2.8
- Affected versionversion=1.3.0.4
- Affected versionversion=1.3.0.4 <=1.3.1.7
- Affected versionversion=1.3.0.7
- Affected versionversion=1.3.0.8
- Affected versionversion=1.3.0.99
- Affected versionversion=1.3.1.1
- Affected versionversion=1.3.1.4
- Affected versionversion=1.3.1.5
- Affected versionversion=1.3.1.7
What conditions does exploitation require?
What is affected?
Published CVSS scores
CVSS describes severity. EPSS estimates exploitation probability.
Attacks
What attackers are doing with it
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Weakness, pattern, technique
Public exploit references
No public exploit references are available in this record.
Labels summarize the accepted research assessment. They do not indicate a test against your environment.
Technologies
Your stack
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Your stack
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