THREATPORT/VULNERABILITY/CVE-2008-5840
HIGH SEVERITY

CVE-2008-5840

Phpicalendar vulnerability

CVSS
7.5
EPSS
3.0%
EPSS pct
86th
Exploited
No known
PHP iCalendar 2.24 and earlier allows remote attackers to bypass authentication by setting the phpicalendar and phpicalendar_login cookies to 1.
Affected vendor
Phpicalendar
Affected product
Phpicalendar
CVSS vector
AV:N/AC:L/Au:N/C:P/I:P/A:P
Weakness type (CWE)
  • CWE-264 — Permissions, Privileges, and Access Controls
Published
2009-01-05

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 confidentiality, partial impact to integrity, partial impact to availability.

Its EPSS score of 3.0% reflects a lower probability of exploitation activity in the wild over the next 30 days, placing it above 86% of all scored CVEs.

Check your external exposure to CVE-2008-5840

  • Confirm whether Phpicalendar Phpicalendar is running on any internet-facing host or subdomain.
  • Match discovered service fingerprints against the version affected by CVE-2008-5840.
  • Prioritise remediation if the asset is public, business-critical, or near authentication/payment flows.

How ThreatPort helps with CVE-2008-5840

ThreatPort's external attack surface scanner checks your internet-facing assets — agentlessly, from the outside in — for the exposed services and versions that CVE-2008-5840 affects, then prioritises the finding by real risk using CISA KEV and FIRST.org EPSS.

Run a free external exposure scan

Are you exposed to CVE-2008-5840?

Run an instant, non-intrusive external scan to check your attack surface for CVE-2008-5840.

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