HOMEVULNERABILITIESCVE-2019-9183
HIGH

CVE-2019-9183

CWE-191Published: April 23, 2020· Updated: Jun 17, 2026

7.5
CVSS v3.1

Official Description

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.

NVD Source

Technical Analysis

CVE-2019-9183 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in availability disruption (denial of service), with a CVSS base score of 7.5.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorNetwork
Attack ComplexityLow
Privileges Req.None
User InteractionNone
ScopeUnchanged
Impact
ConfidentialityNone
IntegrityNone
AvailabilityHigh
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Affected Vendors & Products

contiki-ng1 product(s)
contiki-ng
contiki-os1 product(s)
contiki
Source: NVD CPE · 2 total CPE entries

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
External links open in a new tab. Always verify in a controlled environment before use.

Official Patches & Advisories

PATCHhttps://github.com/contiki-ng/contiki-ng/pull/972
PATCHhttps://github.com/contiki-ng/contiki-ng/pull/972
ADVISORYhttps://github.com/contiki-ng/contiki-ng/releases/tag/release%2Fv4.4
ADVISORYhttps://www.usenix.org/system/files/sec20summer_clements_prepub.pdf
ADVISORYhttps://github.com/contiki-ng/contiki-ng/releases/tag/release%2Fv4.4
ADVISORYhttps://www.usenix.org/system/files/sec20summer_clements_prepub.pdf

All References (6)

→
https://github.com/contiki-ng/contiki-ng/pull/972Patch · Third Party Advisory
→
https://github.com/contiki-ng/contiki-ng/releases/tag/release%2Fv4.4Release Notes · Third Party Advisory
→
https://www.usenix.org/system/files/sec20summer_clements_prepub.pdfTechnical Description · Third Party Advisory
→
https://github.com/contiki-ng/contiki-ng/pull/972Patch · Third Party Advisory
→
https://github.com/contiki-ng/contiki-ng/releases/tag/release%2Fv4.4Release Notes · Third Party Advisory
→
https://www.usenix.org/system/files/sec20summer_clements_prepub.pdfTechnical Description · Third Party Advisory

Quick Facts

CVE IDCVE-2019-9183
CVSS Score7.5 / 10
SeverityHIGH
WeaknessCWE-191
CISA KEVNo
Affected2 vendor(s)
PublishedApr 23, 2020

Related CVEs (CWE-191)

CVE-2007-0063
10.0
CVE-2024-32040
9.8
CVE-2021-37706
9.8
CVE-2023-32014
9.8
CVE-2021-3323
9.8
CVE-2024-38063
9.8

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2019-9183 in threat intel feeds
  • →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWATCH.COM. CVE data is provided under the NVD usage policy.
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