CVE-2020-24034

Sagemcom F@ST 5280 routers using firmware version 1.150.61 have insecure deserialization that allows any authenticated user to perform a privilege escalation to any other user. By making a request with valid sess_id, nonce, and ha1 values inside of the serialized session cookie, an attacker may alter the user value inside of this cookie, and assume the role and permissions of the user specified. By assuming the role of the user internal, which is inaccessible to end users by default, the attacker gains the permissions of the internal account, which includes the ability to flash custom firmware to the router, allowing the attacker to achieve a complete compromise.

• CWE-502

• http://packetstormsecurity.com/files/159026/Sagemcom-F-ST-5280-Privilege-Escalation.htmlExploit, Third Party Advisory, VDB Entry
• http://seclists.org/fulldisclosure/2020/Sep/3Mailing List, Third Party Advisory
• https://seclists.org/fulldisclosure/2020/Sep/3Mailing List, Third Party Advisory
• https://support.sagemcom.com/fr/haut-debitVendor Advisory
• http://packetstormsecurity.com/files/159026/Sagemcom-F-ST-5280-Privilege-Escalation.htmlExploit, Third Party Advisory, VDB Entry
• http://seclists.org/fulldisclosure/2020/Sep/3Mailing List, Third Party Advisory
• https://seclists.org/fulldisclosure/2020/Sep/3Mailing List, Third Party Advisory
• https://support.sagemcom.com/fr/haut-debitVendor Advisory

Published

Sep 1, 2020

Last Modified

Jun 17, 2026

Status

Modified

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
• Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
• PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
• AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.

• CVE-2020-24027In Live Networks, Inc., liblivemedia version 20200625, there…9.8
• CVE-2020-24028ForLogic Qualiex v1 and v3 allows any authenticated customer…8.8
• CVE-2020-24029Because of unauthenticated password changes in ForLogic Qual…9.8
• CVE-2020-24030ForLogic Qualiex v1 and v3 has weak token expiration. This a…9.8
• CVE-2020-24032tz.pl on XoruX LPAR2RRD and STOR2RRD 2.70 virtual appliances…9.8
• CVE-2020-24033An issue was discovered in fs.com S3900 24T4S 1.7.0 and earl…8.8
• CVE-2020-24036PHP object injection in the Ajax endpoint of the backend in …8.8
• CVE-2020-24038myFax version 229 logs sensitive information in the export l…6.5
• CVE-2020-24045A sandbox escape issue was discovered in TitanHQ SpamTitan G…7.2
• CVE-2020-24046A sandbox escape issue was discovered in TitanHQ SpamTitan G…7.2
• CVE-2020-24051The Moog EXO Series EXVF5C-2 and EXVP7C2-3 units support the…9.8
• CVE-2020-24052Several XML External Entity (XXE) vulnerabilities in the Moo…9.1