PatchTheCVECVE-2018-16596: A stack-based buffer overflow in the LAN UPnP service running on UDP port 1900 of Swisscom Internet-Box (2, St
CVE-2018-16596 is a high-severity flaw (CVSS 7.5) affecting internet-box standard firmware, internet-box light firmware, internet-box plus firmware. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.
A stack-based buffer overflow in the LAN UPnP service running on UDP port 1900 of Swisscom Internet-Box (2, Standard, and Plus) prior to v09.04.00 and Internet-Box light prior to v08.05.02 allows remote code execution. No authentication is required to exploit this vulnerability. Sending a simple UDP packet to port 1900 allows an attacker to execute code on a remote device. However, this is only possible if the attacker is inside the LAN. Because
Why this priority
- High severity
A fixed release or distro patch exists.
Risk facts
| CVSS score | 7.5 (High) |
| Attack vector | Adjacent network |
| Attack complexity | High |
| Privileges needed | None |
| User interaction | None |
| EPSS exploit chance | 0.7% (top 47%) |
| CISA exploited list | No |
| Weakness | CWE-787 |
| Published | 2018-12-17 |
| Last modified | 2026-06-17 |
Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score
Am I affected?
Timeline
- Published CVE record published
- Updated Record last modified
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.
Quick answers
How do I fix CVE-2018-16596?
internet-box standard firmware: upgrade to 09.04.00; internet-box light firmware: upgrade to 08.05.02; internet-box plus firmware: upgrade to 09.04.00. Exact commands for each OS are on this page.
Is CVE-2018-16596 being exploited?
CVE-2018-16596 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.
What does CVE-2018-16596 affect?
CVE-2018-16596 affects internet-box standard firmware, internet-box light firmware, internet-box plus firmware. Severity is high (CVSS 7.5). A stack-based buffer overflow in the LAN UPnP service running on UDP port 1900 of Swisscom Internet-Box (2, Standard, and Plus) prior to v09.04.00 and Internet-Box light prior to v08.05.02 allows remote code execution. No authentication is
How urgent is CVE-2018-16596?
Priority 40/100. High severity
Related CVEs
- CVE-2020-16134 HIGH 8.0 UPGRADE UPGRADE An issue was discovered on Swisscom Internet Box 2, Internet Box Standard, Internet Box Plus prior to 10.04.38