LOW
CVE-2015-1558
CWE-399Published: February 9, 2015· Updated: Jun 17, 2026
3.5
CVSS v3.1
Official Description
Asterisk Open Source 12.x before 12.8.1 and 13.x before 13.1.1, when using the PJSIP channel driver, does not properly reclaim RTP ports, which allows remote authenticated users to cause a denial of service (file descriptor consumption) via an SDP offer containing only incompatible codecs.
Technical Analysis
CVE-2015-1558 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.
Exploitation requires some privileges, which limits the exposure to scenarios where an attacker has already gained initial access.
CVSS v3.1 Vector Breakdown
Exploitability
Attack VectorNetwork
Attack ComplexityM
Privileges Req.
User Interaction
Scope
Impact
ConfidentialityNone
IntegrityNone
AvailabilityP
AV:N/AC:M/Au:S/C:N/I:N/A:P
Affected Vendors & Products
digium1 product(s)
asterisk
Source: NVD CPE · 16 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
All References (8)
→
http://downloads.asterisk.org/pub/security/AST-2015-001.htmlVendor Advisory
→
http://downloads.asterisk.org/pub/security/AST-2015-001.htmlVendor Advisory
Quick Facts
CVE IDCVE-2015-1558
CVSS Score3.5 / 10
SeverityLOW
WeaknessCWE-399
CISA KEVNo
Affected1 vendor(s)
PublishedFeb 9, 2015
Related CVEs (CWE-399)
Recommended Actions
- →Apply vendor patches immediately
- →Monitor CVE-2015-1558 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.