HOMEVULNERABILITIESCVE-2019-12827
MEDIUM

CVE-2019-12827

CWE-787Published: July 12, 2019· Updated: Jun 17, 2026

6.5
CVSS v3.1

Official Description

Buffer overflow in res_pjsip_messaging in Digium Asterisk versions 13.21-cert3, 13.27.0, 15.7.2, 16.4.0 and earlier allows remote authenticated users to crash Asterisk by sending a specially crafted SIP MESSAGE message.

NVD Source

Technical Analysis

CVE-2019-12827 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

Exploitation requires low privileges, which limits the exposure to scenarios where an attacker has already gained initial access.

A successful exploit results in availability disruption (denial of service), with a CVSS base score of 6.5.

From a weakness classification perspective (CWE-787): Out-of-bounds write vulnerabilities can lead to data corruption, crashes, or arbitrary code execution.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorNetwork
Attack ComplexityLow
Privileges Req.Low
User InteractionNone
ScopeUnchanged
Impact
ConfidentialityNone
IntegrityNone
AvailabilityHigh
CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Affected Vendors & Products

digium2 product(s)
asteriskcertified asterisk
Source: NVD CPE · 2 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

ADVISORYhttp://downloads.digium.com/pub/security/AST-2019-002.html
ADVISORYhttps://issues.asterisk.org/jira/browse/ASTERISK-28447
ADVISORYhttp://downloads.digium.com/pub/security/AST-2019-002.html
ADVISORYhttps://issues.asterisk.org/jira/browse/ASTERISK-28447

All References (4)

→
http://downloads.digium.com/pub/security/AST-2019-002.htmlVendor Advisory
→
https://issues.asterisk.org/jira/browse/ASTERISK-28447Vendor Advisory
→
http://downloads.digium.com/pub/security/AST-2019-002.htmlVendor Advisory
→
https://issues.asterisk.org/jira/browse/ASTERISK-28447Vendor Advisory

Quick Facts

CVE IDCVE-2019-12827
CVSS Score6.5 / 10
SeverityMEDIUM
WeaknessCWE-787
CISA KEVNo
Affected1 vendor(s)
PublishedJul 12, 2019

Related CVEs (CWE-787)

CVE-2004-0574
10.0
CVE-2026-4746
10.0
CVE-2015-0235
10.0
CVE-2004-1287
10.0
CVE-2018-10718
10.0
CVE-2011-1807
10.0

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2019-12827 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.
← All Vulnerabilities·Search for CVE-2019-12827·NVD