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CVE-2013-0803

81
FAUCET Score

CVE-2013-0803 is a critical PHP file upload vulnerability in PolarBear CMS 2.5, specifically within the upload.php component. This flaw allows an unauthenticated attacker to upload and execute arbitrary code on the affected system. With a CVSS score of 9.8 (Critical) and an EPSS score indicating high exploitability, this vulnerability poses a significant risk due to its network-based attack vector, low attack complexity, and complete compromise of confidentiality, integrity, and availability. While not on the CISA KEV catalog, public exploit code, including a Metasploit module, is readily available, though there is no evidence of widespread community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
2.5CPE matchmatch criteria
cpe:2.3:a:polarbear_cms_project:polarbear_cms:2.5:*:*:*:*:*:*:*

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
74.98%
Probability of exploitation in next 30 days
EPSS Percentile
99.5%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
Metasploit: PolarBear CMS PHP File Upload Vulnerability · Jan 21, 2012
ExploitDB: EDB-24549 · Feb 26, 2013
This CVE's current EPSS score of 0.7498 is in the 98th percentile among its peer group of 36,835 CVEs.

Social Chatter

No social media mentions found for this CVE.

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

exchange.xforce.ibmcloud.com / vulnerabilities/82378
Third Party AdvisoryVDB Entry
packetstormsecurity.com / files/cve/CVE-2013-0803
ExploitThird Party AdvisoryVDB Entry
exploit-db.com / exploits/24549
ExploitThird Party AdvisoryVDB Entry