THREATPORT/VULNERABILITY/CVE-2007-1003
HIGH SEVERITY

CVE-2007-1003

X11 vulnerability

CVSS
9.0
EPSS
5.2%
EPSS pct
92th
Exploited
No known
Integer overflow in ALLOCATE_LOCAL in the ProcXCMiscGetXIDList function in the XC-MISC extension in the X.Org X11 server (xserver) 7.1-1.1.0, and other versions before 20070403, allows remote authenticated users to execute arbitrary code via a large expression, which results in memory corruption.
Affected vendor
X.Org
Affected product
X11
CVSS vector
AV:N/AC:L/Au:S/C:C/I:C/A:C
Published
2007-04-06

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 5.2% reflects a lower probability of exploitation activity in the wild over the next 30 days, placing it above 92% of all scored CVEs.

Check your external exposure to CVE-2007-1003

  • Confirm whether X.Org X11 is running on any internet-facing host or subdomain.
  • Match discovered service fingerprints against the version affected by CVE-2007-1003.
  • Prioritise remediation if the asset is public, business-critical, or near authentication/payment flows.

How ThreatPort helps with CVE-2007-1003

ThreatPort's external attack surface scanner checks your internet-facing assets — agentlessly, from the outside in — for the exposed services and versions that CVE-2007-1003 affects, then prioritises the finding by real risk using CISA KEV and FIRST.org EPSS.

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