CVE-2014-3427

medium

Published 2014-07-16 · Modified 2026-05-06

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CVSS v3

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CVSS v4 NEW

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not yet in upstream

VIR risk

6.0

Description

CRLF injection vulnerability in Yealink VoIP Phones with firmware 28.72.0.2 allows remote attackers to inject arbitrary HTTP headers and conduct HTTP response splitting attacks via the model parameter to servlet.

Predictions

Exploit likelihood

20%

Patch ETA

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Heuristic predictions, AS-IS, for prioritization only.

Mitigations

No mitigations published for this CVE yet.

The vendor-content worker queues fetches as references arrive (check back in a few minutes). Or — if you've already worked around this in production — publish your fix to the community-verified tier.

✚ Propose a mitigation on Community → Mitigations published via the community go through AI scoring + 2 human reviewers + 7-day silent objection window before landing here with source_tier=community-verified.

Exploits

Public proof-of-concept code below. AS-IS, for defenders and authorised testing only.

Exploit-DB

EDB-39334 webapps java verified text · 1 KB

Jesus Oquendo · 2014-06-12

Yealink VoIP Phones - '/servlet' HTTP Response Splitting

text exploit Source: Exploit-DB

source: https://www.securityfocus.com/bid/68022/info

Yealink VoIP Phones are prone to an HTTP-response-splitting vulnerability because it fails to properly sanitize user-supplied input.

An attacker may leverage this issue to influence how web content is served, cached, or interpreted. This could aid in various attacks that try to entice client users into a false sense of trust.

Yealink VoIP Phones firmware 28.72.0.2 and hardware 28.2.0.128.0.0.0 are vulnerable; other versions may also be affected. 

GET /servlet?linepage=1&model=%0d%0a[Header]&p=dsskey&q=load

References

Community-verified mitigations for this CVE will appear above when contributors publish them.

Verify integrity in audit chain (admin only). AS-IS.