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CVE-2003-0861

24
FAUCET Score

CVE-2003-0861 describes integer overflows in the base64_encode function and the GD library within PHP versions prior to 4.3.3. This vulnerability carries a critical CVSS score of 10.0, indicating a high potential for complete compromise of confidentiality, integrity, and availability, though specific attack vectors and impact remain undefined. Despite its age and critical severity, there is no evidence of active exploitation, public exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
4.0CPE matchmatch criteria
cpe:2.3:a:php:php:4.0:*:*:*:*:*:*:*
4.0.1CPE matchmatch criteria
cpe:2.3:a:php:php:4.0.1:*:*:*:*:*:*:*
4.0.1CPE matchmatch criteria
cpe:2.3:a:php:php:4.0.1:patch1:*:*:*:*:*:*
4.0.1CPE matchmatch criteria
cpe:2.3:a:php:php:4.0.1:patch2:*:*:*:*:*:*
4.0.2CPE matchmatch criteria
cpe:2.3:a:php:php:4.0.2:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

10.0HIGH

AV:N/AC:L/Au:N/C:C/I:C/A:C

Confidentiality Impact
COMPLETE
Integrity Impact
COMPLETE
Availability Impact
COMPLETE
Access Vector
NETWORK
Access Complexity
LOW
Authentication
NONE
Exploitability Score
10.0
Impact Score
10.0
CvssVersion
2.0

Exploit Intelligence

EPSS Score
1.42%
Probability of exploitation in next 30 days
EPSS Percentile
70.1%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0142 is in the 51st percentile among its peer group of 51,506 CVEs.

Social Chatter

No social media mentions found for this CVE.

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Vendor Advisories (1)

redhatCVE-2003-0861

CVE-2003-0861

References

php.net / ChangeLog-4.php
php.net / release_4_3_3.php
Vendor Advisory