6.9
Medium
CVE-2026-6985 A weakness has been identified in Cesanta Mongoose up to 7.20
Description
A weakness has been identified in Cesanta Mongoose up to 7.20. This vulnerability affects the function handle_opt of the file /src/net_builtin.c of the component TCP Option Handler. This manipulation of the argument optlen causes infinite loop. The attack is possible to be carried out remotely. The exploit has been made available to the public and could be used for attacks. Upgrading to version 7.21 is able to resolve this issue. Upgrading the affected component is advised. VulDB has contacted the vendor early and they confirmed quickly, that this issue got fixed already.
Affected products and versions
| Product | Affected versions | Fixed in |
|---|---|---|
| Mongoose 7.21 | earliest → < 7.21 | 7.21 |
| Mongoose | 7.20 | No fix stated |
| Mongoose | 7.19 | No fix stated |
| Mongoose | 7.18 | No fix stated |
| Mongoose | 7.17 | No fix stated |
| Mongoose | 7.16 | No fix stated |
| Mongoose | 7.15 | No fix stated |
| Mongoose | 7.14 | No fix stated |
| Mongoose | 7.13 | No fix stated |
Show the 13 other branches Hide the 13 other branches
| Product | Affected versions | Fixed in |
|---|---|---|
| Mongoose | 7.12 | No fix stated |
| Mongoose | 7.11 | No fix stated |
| Mongoose | 7.10 | No fix stated |
| Mongoose | 7.9 | No fix stated |
| Mongoose | 7.8 | No fix stated |
| Mongoose | 7.7 | No fix stated |
| Mongoose | 7.6 | No fix stated |
| Mongoose | 7.5 | No fix stated |
| Mongoose | 7.4 | No fix stated |
| Mongoose | 7.3 | No fix stated |
| Mongoose | 7.2 | No fix stated |
| Mongoose | 7.1 | No fix stated |
| Mongoose | 7.0 | No fix stated |
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