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CVE-2009-4301

18
FAUCET Score

CVE-2009-4301 describes a permission bypass vulnerability in Moodle versions 1.8.x prior to 1.8.11 and 1.9.x prior to 1.9.7, specifically within the mnet/lib.php component when MNET services are enabled. This flaw allows remote authenticated servers to execute arbitrary MNET functions, leading to potential compromise of confidentiality, integrity, and availability. While the CVSS score is 6.0 (Medium), indicating network-based attacks with medium complexity requiring authentication, there is no evidence of active exploitation, public exploit code, or significant community discussion surrounding this vulnerability.

Impacted Technologies

VendorProductVersion(s)CPE
1.8.1CPE matchmatch criteria
cpe:2.3:a:moodle:moodle:1.8.1:*:*:*:*:*:*:*
1.8.2CPE matchmatch criteria
cpe:2.3:a:moodle:moodle:1.8.2:*:*:*:*:*:*:*
1.8.3CPE matchmatch criteria
cpe:2.3:a:moodle:moodle:1.8.3:*:*:*:*:*:*:*
1.8.4CPE matchmatch criteria
cpe:2.3:a:moodle:moodle:1.8.4:*:*:*:*:*:*:*
1.8.5CPE matchmatch criteria
cpe:2.3:a:moodle:moodle:1.8.5:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

6.0MEDIUM

AV:N/AC:M/Au:S/C:P/I:P/A:P

Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
Access Vector
NETWORK
Access Complexity
MEDIUM
Authentication
SINGLE
Exploitability Score
6.8
Impact Score
6.4
CvssVersion
2.0

Exploit Intelligence

EPSS Score
1.38%
Probability of exploitation in next 30 days
EPSS Percentile
69.2%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0138 is in the 67th percentile among its peer group of 1,428 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.1 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-2009-4301Moderate

Moodle: Multiple security fixes in 1.9.7 and 1.8.11 upstream releases

Nov 25, 2009

References

cvs.moodle.org / moodle/mnet/lib.php
Patch
cvs.moodle.org / moodle/mnet/lib.php
Patch
docs.moodle.org / en/Moodle_1.8.11_release_notes
Patch
docs.moodle.org / en/Moodle_1.9.7_release_notes
Patch
moodle.org / mod/forum/discuss.php
PatchVendor Advisory
secunia.com / advisories/37614
Vendor Advisory
redhat.com / archives/fedora-package-announce/2009-December/msg00704.html
redhat.com / archives/fedora-package-announce/2009-December/msg00730.html
redhat.com / archives/fedora-package-announce/2009-December/msg00751.html
securityfocus.com / bid/37244
Patch
vupen.com / english/advisories/2009/3455
Vendor Advisory