CVE-2013-5758

Sip T38g vulnerability

CVSS

9.0

EPSS

11.9%

EPSS pct

96th

Exploited

No known

cgi-bin/cgiServer.exx in Yealink VoIP Phone SIP-T38G allows remote authenticated users to execute arbitrary commands by calling the system method in the body of a request, as demonstrated by running unauthorized services, changing directory permissions, and modifying files.

Affected vendor

Yealink

Affected product

Sip T38g

CVSS vector

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

Weakness type (CWE)

CWE-78 — OS Command Injection

Published

2014-08-03

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 complete impact to confidentiality, complete impact to integrity, complete impact to availability.

Its EPSS score of 11.9% reflects a moderate probability of exploitation activity in the wild over the next 30 days, placing it above 96% of all scored CVEs.

Check your external exposure to CVE-2013-5758

Confirm whether Yealink Sip T38g is running on any internet-facing host or subdomain.
Match discovered service fingerprints against the version affected by CVE-2013-5758.
Prioritise remediation if the asset is public, business-critical, or near authentication/payment flows.

How ThreatPort helps with CVE-2013-5758

ThreatPort's external attack surface scanner checks your internet-facing assets — agentlessly, from the outside in — for the exposed services and versions that CVE-2013-5758 affects, then prioritises the finding by real risk using CISA KEV and FIRST.org EPSS.

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