CVE-2019-9183 json
An issue was discovered in Contiki-NG through 4.3 and Contiki through 3.0.
published 2020-04-23 6 y ago modified 2026-06-17 4 mo ago also EUVD-2019-18561
- cvss
- 7.5
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 2.3%
- EPSS 2.3% chance of exploitation in 30 days, percentile 83%
- public exploits
- 0
- none known
Summary
An issue was discovered in Contiki-NG through 4.3 and Contiki through 3.0. A buffer overflow is present due to an integer underflow during 6LoWPAN fragment processing in the face of truncated fragments in os/net/ipv6/sicslowpan.c. This results in accesses of unmapped memory, crashing the application. An attacker can cause a denial-of-service via a crafted 6LoWPAN frame.
Patch / fix
Exploit prediction
2.31% chance of exploitation in the next 30 days, higher than 83% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.1 | 7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
| NVD | 2.0 | 5.0 | AV:N/AC:L/Au:N/C:N/I:N/A:P |
Classification
References
-
github.com
/contiki-ng/contiki-ng/pull/972
patch, third-party-advisory
-
github.com
/contiki-ng/contiki-ng/releases/tag/release%2Fv4.4
release-notes, third-party-advisory
-
usenix.org
/system/files/sec20summer_clements_prepub.pdf
technical-description, third-party-advisory
Sources
- CVE List CVE-2019-9183
- NVD CVE-2019-9183
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.