HOMEVULNERABILITIESCVE-2020-14937
CRITICAL

CVE-2020-14937

CWE-125Published: August 18, 2020· Updated: Jun 17, 2026

9.1
CVSS v3.1

Official Description

Memory access out of buffer boundaries issues was discovered in Contiki-NG 4.4 through 4.5, in the SNMP BER encoder/decoder. The length of provided input/output buffers is insufficiently verified during the encoding and decoding of data. This may lead to out-of-bounds buffer read or write access in BER decoding and encoding functions.

NVD Source

Technical Analysis

CVE-2020-14937 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 complete confidentiality breach (data exposure), availability disruption (denial of service), with a CVSS base score of 9.1.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorNetwork
Attack ComplexityLow
Privileges Req.None
User InteractionNone
ScopeUnchanged
Impact
ConfidentialityHigh
IntegrityNone
AvailabilityHigh
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/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
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Official Patches & Advisories

ADVISORYhttps://drive.google.com/file/d/1mAkJBVZNv5PMVwLojru0njH38zEXpWui/view?usp=sharing
ADVISORYhttps://github.com/contiki-ng/contiki-ng/issues/1354
ADVISORYhttps://drive.google.com/file/d/1mAkJBVZNv5PMVwLojru0njH38zEXpWui/view?usp=sharing
ADVISORYhttps://github.com/contiki-ng/contiki-ng/issues/1354

All References (4)

→
https://drive.google.com/file/d/1mAkJBVZNv5PMVwLojru0njH38zEXpWui/view?usp=sharingThird Party Advisory
→
https://github.com/contiki-ng/contiki-ng/issues/1354Exploit · Third Party Advisory
→
https://drive.google.com/file/d/1mAkJBVZNv5PMVwLojru0njH38zEXpWui/view?usp=sharingThird Party Advisory
→
https://github.com/contiki-ng/contiki-ng/issues/1354Exploit · Third Party Advisory

Quick Facts

CVE IDCVE-2020-14937
CVSS Score9.1 / 10
SeverityCRITICAL
WeaknessCWE-125
CISA KEVNo
Affected1 vendor(s)
PublishedAug 18, 2020

Related CVEs (CWE-125)

CVE-2021-41556
10.0
CVE-2017-14451
10.0
CVE-2009-2523
10.0
CVE-2021-21777
10.0
CVE-2013-0767
10.0
CVE-2023-26489
9.9

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2020-14937 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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