THREATPORT/VULNERABILITY/CVE-2003-0161
HIGH SEVERITY

CVE-2003-0161

Sendmail vulnerability

CVSS
10.0
EPSS
38.2%
EPSS pct
98th
Exploited
No known
The prescan() function in the address parser (parseaddr.c) in Sendmail before 8.12.9 does not properly handle certain conversions from char and int types, which can cause a length check to be disabled when Sendmail misinterprets an input value as a special "NOCHAR" control value, allowing attackers to cause a denial of service and possibly execute arbitrary code via a buffer overflow attack using messages, a different vulnerability than CVE-2002-1337.
Affected vendor
Sendmail
Affected product
Sendmail
CVSS vector
AV:N/AC:L/Au:N/C:C/I:C/A:C
Published
2003-04-02

Risk analysis

Based on its CVSS vector, this vulnerability is exploitable over the network, low attack complexity, requiring no authentication. Successful exploitation leads to complete impact to confidentiality, complete impact to integrity, complete impact to availability.

Its EPSS score of 38.2% reflects a moderate probability of exploitation activity in the wild over the next 30 days, placing it above 98% of all scored CVEs.

Check your external exposure to CVE-2003-0161

  • Confirm whether Sendmail Sendmail is running on any internet-facing host or subdomain.
  • Match discovered service fingerprints against the version affected by CVE-2003-0161.
  • Prioritise remediation if the asset is public, business-critical, or near authentication/payment flows.

How ThreatPort helps with CVE-2003-0161

ThreatPort's external attack surface scanner checks your internet-facing assets — agentlessly, from the outside in — for the exposed services and versions that CVE-2003-0161 affects, then prioritises the finding by real risk using CISA KEV and FIRST.org EPSS.

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