THREATPORT/VULNERABILITY/CVE-2009-1902
MEDIUM SEVERITY

CVE-2009-1902

Modsecurity vulnerability

CVSS
5.0
EPSS
13.7%
EPSS pct
96th
Exploited
No known
The multipart processor in ModSecurity before 2.5.9 allows remote attackers to cause a denial of service (crash) via a multipart form datapost request with a missing part header name, which triggers a NULL pointer dereference.
Affected vendor
Trustwave
Affected product
Modsecurity
CVSS vector
AV:N/AC:L/Au:N/C:N/I:N/A:P
Weakness type (CWE)
  • CWE-476 — NULL Pointer Dereference
Published
2009-06-03

Risk analysis

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

Its EPSS score of 13.7% 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-2009-1902

  • Confirm whether Trustwave Modsecurity is running on any internet-facing host or subdomain.
  • Match discovered service fingerprints against the version affected by CVE-2009-1902.
  • Prioritise remediation if the asset is public, business-critical, or near authentication/payment flows.

How ThreatPort helps with CVE-2009-1902

ThreatPort's external attack surface scanner checks your internet-facing assets — agentlessly, from the outside in — for the exposed services and versions that CVE-2009-1902 affects, then prioritises the finding by real risk using CISA KEV and FIRST.org EPSS.

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Are you exposed to CVE-2009-1902?

Run an instant, non-intrusive external scan to check your attack surface for CVE-2009-1902.

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