CVE-2014-6609

Asterisk vulnerability

CVSS

4.0

EPSS

3.6%

EPSS pct

88th

Exploited

No known

The res_pjsip_pubsub module in Asterisk Open Source 12.x before 12.5.1 allows remote authenticated users to cause a denial of service (crash) via crafted headers in a SIP SUBSCRIBE request for an event package.

Affected vendor

Digium

Affected product

Asterisk

CVSS vector

AV:N/AC:L/Au:S/C:N/I:N/A:P

Weakness type (CWE)

CWE-20 — Improper Input Validation

Published

2014-11-26

Risk analysis

Based on its CVSS vector, this vulnerability is exploitable over the network, low attack complexity, requiring single-factor authentication. Successful exploitation leads to partial impact to availability.

Its EPSS score of 3.6% reflects a lower probability of exploitation activity in the wild over the next 30 days, placing it above 88% of all scored CVEs.

Check your external exposure to CVE-2014-6609

Confirm whether Digium Asterisk is running on any internet-facing host or subdomain.
Match discovered service fingerprints against the version affected by CVE-2014-6609.
Prioritise remediation if the asset is public, business-critical, or near authentication/payment flows.

How ThreatPort helps with CVE-2014-6609

ThreatPort's external attack surface scanner checks your internet-facing assets — agentlessly, from the outside in — for the exposed services and versions that CVE-2014-6609 affects, then prioritises the finding by real risk using CISA KEV and FIRST.org EPSS.

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