HOMEVULNERABILITIESCVE-2022-35926
HIGH

CVE-2022-35926

CWE-125Published: August 4, 2022· Updated: Jun 17, 2026

7.5
CVSS v3.1

Official Description

Contiki-NG is an open-source, cross-platform operating system for IoT devices. Because of insufficient validation of IPv6 neighbor discovery options in Contiki-NG, attackers can send neighbor solicitation packets that trigger an out-of-bounds read. The problem exists in the module os/net/ipv6/uip-nd6.c, where memory read operations from the main packet buffer, <code>uip_buf</code>, are not checked if they go out of bounds. In particular, this problem can occur when attempting to read the 2-byte option header and the Source Link-Layer Address Option (SLLAO). This attack requires ipv6 be enabled for the network. The problem has been patched in the develop branch of Contiki-NG. The upcoming 4.8 release of Contiki-NG will include the patch.Users unable to upgrade may apply the patch in Contiki-NG PR #1654.

NVD Source

Technical Analysis

CVE-2022-35926 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
Source: NVD CPE · 1 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/1654
PATCHhttps://github.com/contiki-ng/contiki-ng/pull/1654/commits/a4597001d50a04f4b9c78f323ba731e2f979802c
PATCHhttps://github.com/contiki-ng/contiki-ng/pull/1654
PATCHhttps://github.com/contiki-ng/contiki-ng/pull/1654/commits/a4597001d50a04f4b9c78f323ba731e2f979802c
ADVISORYhttps://github.com/contiki-ng/contiki-ng/releases/tag/release%2Fv4.8
ADVISORYhttps://github.com/contiki-ng/contiki-ng/security/advisories/GHSA-4hpq-4f53-w386
ADVISORYhttps://github.com/contiki-ng/contiki-ng/releases/tag/release%2Fv4.8
ADVISORYhttps://github.com/contiki-ng/contiki-ng/security/advisories/GHSA-4hpq-4f53-w386

All References (8)

→
https://github.com/contiki-ng/contiki-ng/pull/1654Patch · Third Party Advisory
→
https://github.com/contiki-ng/contiki-ng/pull/1654/commits/a4597001d50a04f4b9c78f323ba731e2f979802cPatch · Third Party Advisory
→
https://github.com/contiki-ng/contiki-ng/releases/tag/release%2Fv4.8Third Party Advisory
→
https://github.com/contiki-ng/contiki-ng/security/advisories/GHSA-4hpq-4f53-w386Third Party Advisory
→
https://github.com/contiki-ng/contiki-ng/pull/1654Patch · Third Party Advisory
→
https://github.com/contiki-ng/contiki-ng/pull/1654/commits/a4597001d50a04f4b9c78f323ba731e2f979802cPatch · Third Party Advisory
→
https://github.com/contiki-ng/contiki-ng/releases/tag/release%2Fv4.8Third Party Advisory
→
https://github.com/contiki-ng/contiki-ng/security/advisories/GHSA-4hpq-4f53-w386Third Party Advisory

Quick Facts

CVE IDCVE-2022-35926
CVSS Score7.5 / 10
SeverityHIGH
WeaknessCWE-125
CISA KEVNo
Affected1 vendor(s)
PublishedAug 4, 2022

Related CVEs (CWE-125)

CVE-2009-2523
10.0
CVE-2013-0767
10.0
CVE-2017-14451
10.0
CVE-2021-41556
10.0
CVE-2021-21777
10.0
CVE-2026-34987
9.9

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2022-35926 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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