How severe is CVE-2015-3177?

CVE-2015-3177 has a CVSS 2.0 base score of 3.5, rated low severity.

Is CVE-2015-3177 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (71st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2015-3177?

CVE-2015-3177 primarily affects Moodle. In total, 6 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2015-3177?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2015-3177 published?

CVE-2015-3177 was published on 2015-06-01 and last updated on 2026-06-17.

CVE-2015-3177

CVE-2015-3177 is a low-severity vulnerability in Moodle with a CVSS 2.0 base score of 3.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-17.

Key facts

Severity: Low (CVSS 2.0 base score 3.5)
EPSS exploit prediction: 1% (71st percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-17
Affected product: Moodle
Published: 2015-06-01
Last modified: 2026-06-17

Description

Moodle 2.8.x before 2.8.6 does not consider the tool/monitor:subscribe capability before entering subscriptions to site-wide event-monitor rules, which allows remote authenticated users to obtain sensitive information via a subscription request.

Frequently asked questions

What is CVE-2015-3177?: Moodle 2.8.x before 2.8.6 does not consider the tool/monitor:subscribe capability before entering subscriptions to site-wide event-monitor rules, which allows remote authenticated users to obtain sensitive information via a subscription request.
How severe is CVE-2015-3177?: CVE-2015-3177 has a CVSS 2.0 base score of 3.5, rated low severity.
Is CVE-2015-3177 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (71st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2015-3177?: CVE-2015-3177 primarily affects Moodle. In total, 6 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2015-3177?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2015-3177 published?: CVE-2015-3177 was published on 2015-06-01 and last updated on 2026-06-17.

References

Affected products (6)

cpe:2.3:a:moodle:moodle:2.8.0:*:*:*:*:*:*:*
cpe:2.3:a:moodle:moodle:2.8.1:*:*:*:*:*:*:*
cpe:2.3:a:moodle:moodle:2.8.2:*:*:*:*:*:*:*
cpe:2.3:a:moodle:moodle:2.8.3:*:*:*:*:*:*:*
cpe:2.3:a:moodle:moodle:2.8.4:*:*:*:*:*:*:*
cpe:2.3:a:moodle:moodle:2.8.5:*:*:*:*:*:*:*

More vulnerabilities in Moodle

CVE-2006-4935 — Critical (CVSS 10.0): The Database module in Moodle before 1.6.2 does not properly handle uploaded files, which has unspecified impact and…
CVE-2006-4936 — Critical (CVSS 10.0): Moodle before 1.6.2 does not properly validate the module instance id when creating a course module object, which has…
CVE-2005-2247 — Critical (CVSS 10.0): Multiple unknown vulnerabilities in Moodle before 1.5.1 have unknown impact and attack vectors.
CVE-2004-2233 — Critical (CVSS 10.0): Unknown "front page vulnerability with Moodle servers" for Moodle before 1.3.2 has unknown impact and attack vectors.
CVE-2004-2236 — Critical (CVSS 10.0): Unknown vulnerability in Moodle before 1.3.3 has unknown impact and attack vectors, related to language setting.
CVE-2004-2237 — Critical (CVSS 10.0): Unknown vulnerability in Moodle before 1.3.4 has unknown impact and attack vectors, related to "strings in Moodle…

All CVEs affecting Moodle →

Other CWE-17 vulnerabilities

CVE-2015-5887 — Critical (CVSS 10.0): The TLS Handshake Protocol implementation in Secure Transport in Apple OS X before 10.11 accepts a Certificate Request…
CVE-2015-2738 — Critical (CVSS 10.0): The YCbCrImageDataDeserializer::ToDataSourceSurface function in the YCbCr implementation in Mozilla Firefox before…
CVE-2015-2737 — Critical (CVSS 10.0): The rx::d3d11::SetBufferData function in the Direct3D 11 implementation in Mozilla Firefox before 39.0, Firefox ESR…
CVE-2015-2734 — Critical (CVSS 10.0): The CairoTextureClientD3D9::BorrowDrawTarget function in the Direct3D 9 implementation in Mozilla Firefox before 39.0,…
CVE-2015-4335 — Critical (CVSS 10.0): Redis before 2.8.21 and 3.x before 3.0.2 allows remote attackers to execute arbitrary Lua bytecode via the eval command.
CVE-2015-3292 — Critical (CVSS 10.0): The installer in NetApp OnCommand Workflow Automation before 2.2.1P1 and 3.x before 3.0P1 sets up the Java Debugging…

Browse all CWE-17 vulnerabilities →