CVE-2018-16523 json
Amazon Web Services (AWS) FreeRTOS through 1.3.1, FreeRTOS up to V10.0.1 (with FreeRTOS+TCP), and WITTENSTEIN WHIS Connect middleware TCP/I…
published 2018-12-06 7 y ago modified 2026-06-17 4 mo ago also EUVD-2018-8332
- cvss
- 7.4
- version 3.0, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 2.0%
- EPSS 2.0% chance of exploitation in 30 days, percentile 81%
- public exploits
- 0
- none known
Summary
Amazon Web Services (AWS) FreeRTOS through 1.3.1, FreeRTOS up to V10.0.1 (with FreeRTOS+TCP), and WITTENSTEIN WHIS Connect middleware TCP/IP component allow division by zero in prvCheckOptions.
Exploit prediction
2.05% chance of exploitation in the next 30 days, higher than 81% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- blog.zimperium.com https://blog.zimperium.com/freertos-tcpip-stack-vulnerabilities-details/ referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.0 | 7.4 | CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:H |
| NVD | 2.0 | 5.8 | AV:N/AC:M/Au:N/C:P/I:N/A:P |
Classification
- Weakness
-
- CWE-369 Divide By Zero
References
-
blog.zimperium.com
/freertos-tcpip-stack-vulnerabilities-details/
exploit, third-party-advisory
-
github.com
/aws/amazon-freertos/blob/v1.3.2/CHANGELOG.md
release-notes, third-party-advisory
-
blog.zimperium.com
/freertos-tcpip-stack-vulnerabilities-put-wide-range-devices-risk-compromise-smart-homes-critical-infrastructu
third-party-advisory
Sources
- CVE List CVE-2018-16523
- NVD CVE-2018-16523
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