CVE-2020-35139
FaucetSDN Ryu Denial of Service Vulnerability
An issue was discovered in OFPBundleCtrlMsg in parser.py in Faucet SDN Ryu version 4.34, allows remote attackers to cause a denial of service (DoS) (infinite loop).
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- None
What an attacker can affect
- Confidentiality
- None
- Integrity
- None
- Availability
- High
Exploit likelihood
What each source reports
NVD Score used
An issue was discovered in OFPBundleCtrlMsg in parser.py in Faucet SDN Ryu version 4.34, allows remote attackers to cause a denial of service (DoS) (infinite loop).
- Record
CVE-2020-35139- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - Weakness
- CWE-835
- Updated
- 2026-11-02
CVE List No score
An issue was discovered in OFPBundleCtrlMsg in parser.py in Faucet SDN Ryu version 4.34, allows remote attackers to cause a denial of service (DoS) (infinite loop).
- Record
CVE-2020-35139- Updated
- 2026-11-02
EUVDEUVD-2023-2205 No score
An issue was discovered in OFPBundleCtrlMsg in parser.py in Faucet SDN Ryu version 4.34, allows remote attackers to cause a denial of service (DoS) (infinite loop).
- Record
EUVD-2023-2205- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-4987-5p3p-9r27
FaucetSDN Ryu Denial of Service Vulnerability
An issue was discovered in OFPBundleCtrlMsg in parser.py in FaucetSDN Ryu version 4.34, allows remote attackers to cause a denial of service (DoS) (infinite loop).
- Record
GHSA-4987-5p3p-9r27- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - Weakness
- CWE-770, CWE-835
- Updated
- 2026-11-02
OSV
An issue was discovered in OFPBundleCtrlMsg in parser.py in Faucet SDN Ryu version 4.34, allows remote attackers to cause a denial of service (DoS) (infinite loop).
- Record
CVE-2020-35139- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - Updated
- 2026-11-02
OSVGHSA-4987-5p3p-9r27
FaucetSDN Ryu Denial of Service Vulnerability
An issue was discovered in OFPBundleCtrlMsg in parser.py in FaucetSDN Ryu version 4.34, allows remote attackers to cause a denial of service (DoS) (infinite loop).
- Record
GHSA-4987-5p3p-9r27- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - Weakness
- CWE-770, CWE-835
- Updated
- 2026-11-02
OSVPYSEC-2026-1876
FaucetSDN Ryu Denial of Service Vulnerability
An issue was discovered in OFPBundleCtrlMsg in parser.py in FaucetSDN Ryu version 4.34, allows remote attackers to cause a denial of service (DoS) (infinite loop).
- Record
PYSEC-2026-1876- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
ryuPyPI |
through 4.34 | None known |
ryuPyPI |
through 4.34, plus listed versions 0.21.01.11.21.3 Show 45 moreShow less1.41.51.61.71.81.92.02.12.23.13.103.113.123.133.153.173.183.193.23.203.20.13.20.23.223.233.23.13.23.23.243.253.25.13.263.293.29.13.33.303.43.53.63.73.83.94.04.14.104.114.12 |
None known |
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2020-35139 is a high vulnerability (CVSS 7.5) in Faucet Ryu, published August 11, 2023. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.95%, the 61st percentile. No source names a fixed version.
References
Left out here: 31 versions. The JSON record has them.