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CVE-2012-1495

87
FAUCET Score

CVE-2012-1495 is a critical remote code execution vulnerability affecting WebCalendar versions prior to 1.2.5. It allows unauthenticated attackers to execute arbitrary code by manipulating the form_single_user_login parameter in install/index.php. With a CVSS score of 9.8, this flaw presents a severe risk due to its network-based attack vector, low complexity, and complete compromise of confidentiality, integrity, and availability. Exploit intelligence indicates readily available Metasploit modules and ExploitDB entries, confirming its exploitability. While not on the CISA KEV catalog, the vulnerability has garnered significant community discussion, including mentions related to past high-profile breaches, highlighting its historical relevance and potential for exploitation.

Impacted Technologies

VendorProductVersion(s)CPE
< 1.2.5CPE matchmatch criteria
cpe:2.3:a:webcalendar_project:webcalendar:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

9.8CRITICAL

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
79.76%
Probability of exploitation in next 30 days
EPSS Percentile
99.6%
Percentile rank of EPSS score among Peer Group
As of 2026-07-24
Model: v2026.06.15
Metasploit: WebCalendar 1.2.4 Pre-Auth Remote Code Injection · Apr 23, 2012
ExploitDB: EDB-18797 · Apr 29, 2012
This CVE's current EPSS score of 0.7976 is in the 98th percentile among its peer group of 36,829 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

sourceforge.net / projects/webcalendar/files/webcalendar%201.2/1.2.5
Release NotesThird Party Advisory
packetstormsecurity.com / files/112323/WebCalendar-1.2.4-Pre-Auth-Remote-Code-Injection.html
ExploitThird Party AdvisoryVDB Entry
packetstormsecurity.com / files/112332/WebCalendar-1.2.4-Remote-Code-Execution.html
ExploitThird Party AdvisoryVDB Entry
exploit-db.com / exploits/18775
ExploitThird Party AdvisoryVDB Entry