CVE-2021-40856
HIGHCVSS 7.5/10EPSS 51.06%
Last modified
CVE-2021-40856 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. Auerswald COMfortel 1400 IP and 2600 IP before 2.8G devices allow Authentication Bypass via the /about/../ substring.. EPSS estimates a 51.06% chance of exploitation in the next 30 days.
Description
Auerswald COMfortel 1400 IP and 2600 IP before 2.8G devices allow Authentication Bypass via the /about/../ substring.
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Auerswald | Comfortel 3600 Ip Firmware | <= 2.8f |
| Auerswald | Comfortel 2600 Ip Firmware | <= 2.8f |
| Auerswald | Comfortel 1400 Ip Firmware | <= 2.8f |
References
- http://packetstormsecurity.com/files/165162/Auerswald-COMfortel-1400-2600-3600-IP-2.8F-Authentication-Bypass.htmlExploit, Third Party Advisory, VDB Entry
- https://www.redteam-pentesting.de/en/advisories/-advisories-publicised-vulnerability-analysesExploit, Third Party Advisory
- http://packetstormsecurity.com/files/165162/Auerswald-COMfortel-1400-2600-3600-IP-2.8F-Authentication-Bypass.htmlExploit, Third Party Advisory, VDB Entry
- https://www.redteam-pentesting.de/en/advisories/-advisories-publicised-vulnerability-analysesExploit, Third Party Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2021-40856?
Auerswald COMfortel 1400 IP and 2600 IP before 2.8G devices allow Authentication Bypass via the /about/../ substring.
How severe is CVE-2021-40856?
CVE-2021-40856 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 51.06% probability of exploitation in the next 30 days.
How do I fix CVE-2021-40856?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.
How Strix Helps
- 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.
Related CVEs from 2021
- CVE-2021-40850TCMAN GIM is vulnerable to a SQL injection vulnerability ins…9.8
- CVE-2021-40851TCMAN GIM is vulnerable to a lack of authorization in all av…7.5
- CVE-2021-40852TCMAN GIM is affected by an open redirect vulnerability. Thi…6.1
- CVE-2021-40853TCMAN GIM does not perform an authorization check when tryin…7.2
- CVE-2021-40854AnyDesk before 6.2.6 and 6.3.x before 6.3.3 allows a local u…7.8
- CVE-2021-40855The EU Technical Specifications for Digital COVID Certificat…9.8
- CVE-2021-40857Auerswald COMpact 5500R devices before 8.2B allow Privilege …8.8
- CVE-2021-40858Auerswald COMpact 5500R devices before 8.2B allow Arbitrary …4.9
- CVE-2021-40859Backdoors were discovered in Auerswald COMpact 5500R 7.8A an…9.8
- CVE-2021-40860A SQL Injection in the custom filter query component in Gene…7.2
- CVE-2021-40861A SQL Injection in the custom filter query component in Gene…7.2
- CVE-2021-40862HashiCorp Terraform Enterprise up to v202108-1 contained an …8.8
Are you affected by CVE-2021-40856?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST