HOMEVULNERABILITIESCVE-2018-8828
CRITICAL

CVE-2018-8828

CWE-193Published: March 20, 2018· Updated: Jun 17, 2026

9.8
CVSS v3.1

Official Description

A Buffer Overflow issue was discovered in Kamailio before 4.4.7, 5.0.x before 5.0.6, and 5.1.x before 5.1.2. A specially crafted REGISTER message with a malformed branch or From tag triggers an off-by-one heap-based buffer overflow in the tmx_check_pretran function in modules/tmx/tmx_pretran.c.

NVD Source

Technical Analysis

CVE-2018-8828 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://github.com/kamailio/kamailio/commit/e1d8008a09d9390ebaf698abe8909e10dfec4097
PATCHhttps://github.com/kamailio/kamailio/commit/e1d8008a09d9390ebaf698abe8909e10dfec4097
ADVISORYhttps://github.com/EnableSecurity/advisories/tree/master/ES2018-05-kamailio-heap-overflow
ADVISORYhttps://www.debian.org/security/2018/dsa-4148
ADVISORYhttps://github.com/EnableSecurity/advisories/tree/master/ES2018-05-kamailio-heap-overflow
ADVISORYhttps://www.debian.org/security/2018/dsa-4148

All References (8)

→
https://github.com/EnableSecurity/advisories/tree/master/ES2018-05-kamailio-heap-overflowThird Party Advisory
→
https://github.com/kamailio/kamailio/commit/e1d8008a09d9390ebaf698abe8909e10dfec4097Patch · Third Party Advisory
→
https://usn.ubuntu.com/4240-1/
→
https://www.debian.org/security/2018/dsa-4148Third Party Advisory
→
https://github.com/EnableSecurity/advisories/tree/master/ES2018-05-kamailio-heap-overflowThird Party Advisory
→
https://github.com/kamailio/kamailio/commit/e1d8008a09d9390ebaf698abe8909e10dfec4097Patch · Third Party Advisory
→
https://usn.ubuntu.com/4240-1/
→
https://www.debian.org/security/2018/dsa-4148Third Party Advisory

Quick Facts

CVE IDCVE-2018-8828
CVSS Score9.8 / 10
SeverityCRITICAL
WeaknessCWE-193
CISA KEVNo
Affected2 vendor(s)
PublishedMar 20, 2018

Related CVEs (CWE-193)

CVE-2025-54349
10.0
CVE-2024-10442
10.0
CVE-2024-38441
9.8
CVE-2020-14510
9.8
CVE-2023-38429
9.8
CVE-2020-14508
9.8

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2018-8828 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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