HOMEVULNERABILITIESCVE-2014-7859
CRITICAL

CVE-2014-7859

CWE-119Published: August 25, 2017· Updated: Jun 17, 2026

9.8
CVSS v3.1

Official Description

Stack-based buffer overflow in login_mgr.cgi in D-Link firmware DNR-320L and DNS-320LW before 1.04b08, DNR-322L before 2.10 build 03, DNR-326 before 2.10 build 03, and DNS-327L before 1.04b01 allows remote attackers to execute arbitrary code by crafting malformed "Host" and "Referer" header values.

NVD Source

Technical Analysis

CVE-2014-7859 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), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 9.8.

From a weakness classification perspective (CWE-119): Buffer overflow vulnerabilities can lead to arbitrary code execution or denial of service by corrupting adjacent memory.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorNetwork
Attack ComplexityLow
Privileges Req.None
User InteractionNone
ScopeUnchanged
Impact
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected Vendors & Products

d-link5 product(s)
dns-322l firmwaredns-320lw firmwarednr-326 firmwaredns-327l firmwarednr-320l firmware
dlink5 product(s)
dns-322ldns-320lwdnr-326dns-327ldnr-320l
Source: NVD CPE · 10 total CPE entries

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time
External links open in a new tab. Always verify in a controlled environment before use.

Official Patches & Advisories

All References (10)

http://seclists.org/fulldisclosure/2015/May/125Mailing List · Third Party Advisory · VDB Entry
http://www.securityfocus.com/bid/74878Third Party Advisory · VDB Entry
http://seclists.org/fulldisclosure/2015/May/125Mailing List · Third Party Advisory · VDB Entry
http://www.securityfocus.com/bid/74878Third Party Advisory · VDB Entry

Quick Facts

CVE IDCVE-2014-7859
CVSS Score9.8 / 10
SeverityCRITICAL
WeaknessCWE-119
CISA KEVNo
Affected2 vendor(s)
PublishedAug 25, 2017

Related CVEs (CWE-119)

Recommended Actions

  • Apply vendor patches immediately
  • Monitor CVE-2014-7859 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.