HOMEVULNERABILITIESCVE-2018-14767
CRITICAL

CVE-2018-14767

CWE-20Published: July 31, 2018· Updated: Jun 17, 2026

9.8
CVSS v3.1

Official Description

In Kamailio before 5.0.7 and 5.1.x before 5.1.4, a crafted SIP message with a double "To" header and an empty "To" tag causes a segmentation fault and crash. The reason is missing input validation in the "build_res_buf_from_sip_req" core function. This could result in denial of service and potentially the execution of arbitrary code.

NVD Source

Technical Analysis

CVE-2018-14767 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.

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

Debian1 product(s)
debian linux
kamailio1 product(s)
kamailio
Source: NVD CPE · 3 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://skalatan.de/blog/advisory-hw-2018-05
PATCHhttps://skalatan.de/blog/advisory-hw-2018-05
ADVISORYhttps://lists.debian.org/debian-lts-announce/2018/08/msg00018.html
ADVISORYhttps://www.debian.org/security/2018/dsa-4267
ADVISORYhttps://lists.debian.org/debian-lts-announce/2018/08/msg00018.html
ADVISORYhttps://www.debian.org/security/2018/dsa-4267

All References (6)

→
https://lists.debian.org/debian-lts-announce/2018/08/msg00018.htmlMailing List · Third Party Advisory
→
https://skalatan.de/blog/advisory-hw-2018-05Exploit · Patch · Third Party Advisory
→
https://www.debian.org/security/2018/dsa-4267Third Party Advisory
→
https://lists.debian.org/debian-lts-announce/2018/08/msg00018.htmlMailing List · Third Party Advisory
→
https://skalatan.de/blog/advisory-hw-2018-05Exploit · Patch · Third Party Advisory
→
https://www.debian.org/security/2018/dsa-4267Third Party Advisory

Quick Facts

CVE IDCVE-2018-14767
CVSS Score9.8 / 10
SeverityCRITICAL
WeaknessCWE-20
CISA KEVNo
Affected2 vendor(s)
PublishedJul 31, 2018

Related CVEs (CWE-20)

CVE-2026-48281
10.0
CVE-2026-48316
10.0
CVE-2026-33587
10.0
CVE-2011-4755
10.0
CVE-2026-48277
10.0
CVE-2026-47928
10.0

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2018-14767 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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