What is the CVSS score of CVE-2015-1464?

CVE-2015-1464 has a CVSS 2.0 base score of 6.4 (Medium). CVSS vector: AV:N/AC:L/Au:N/C:P/I:P/A:N. EPSS exploitation probability: 0.3%.

Request Tracker CVE-2015-1464

MEDIUM

Improper Access Control (CWE-284)

2015-03-09 cve@mitre.org

Authentication Bypass Fedora Request Tracker Fedoraproject Bestpractical

6.4

CVSS 2.0 · NVD

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Vulnerability Assessment

Weakness	CWE CWE-284 OWASP Top 10:2025 A01:2025 - Broken Access Control ASVS 5.0 V8 - Authorization Access control enforcement MITRE ATT&CK 1 technique across 1 tactic: Defense Evasion The technique list with ATT&CK links and the kill-chain view is part of the Basic plan and up. Sign in to read
Impact	CVSS score of 6.4 (MEDIUM). Attack characteristics: network attack vector, low complexity. EPSS exploitation probability: 0.35%.
Exploit ScenarioDerived	This vulnerability can be exploited remotely over the network. Successful exploitation could compromise the medium-severity affected system.

This Month Plan within 30 days. Why: MEDIUM severity (CVSS 4.0-6.9).

No patch listed yet 0.3% exploitation probability (EPSS)

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AnalysisAI

RT (aka Request Tracker) before 4.0.23 and 4.2.x before 4.2.10 allows remote attackers to hijack sessions via an RSS feed URL. Rated medium severity (CVSS 6.4), this vulnerability is remotely exploitable, low attack complexity. No vendor patch available.

RemediationAI

No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Apply vendor patches when available. Implement network segmentation and monitoring as interim mitigations.

Affects your stack

Find out whether the stacks and servers you run are on an affected version.

Checking this CVE against your own stacks and servers is part of the Basic plan and up.

Technical ContextAI · show details

This vulnerability is classified under CWE-284. RT (aka Request Tracker) before 4.0.23 and 4.2.x before 4.2.10 allows remote attackers to hijack sessions via an RSS feed URL. Affected products include: Fedoraproject Fedora, Bestpractical Request Tracker. Version information: before 4.0.23.

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Exploit and PoC references, threat intelligence from 22 sources

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Severity by source

NVD PRIMARY 6.4 MEDIUM

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

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

Attack Vector

Network

Attack Complexity

Low

Confidentiality

Integrity

Availability

None

DescriptionCVE.org

RT (aka Request Tracker) before 4.0.23 and 4.2.x before 4.2.10 allows remote attackers to hijack sessions via an RSS feed URL.

Threat Intelligence Overview

EPSS Score

0.3%

Top 43% exploitable

Data Quality

3 sources

Confidence: Low

NVD

CVE.org

EPSS

How this decision was reached

The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.

SignalValue

Severity MEDIUM

CISA KEV No

Public POC No

EPSS 0.3%

Patch available No

Active threat No

Deciding rule

MEDIUM severity (CVSS 4.0-6.9)

What every action level means

Emergency Immediate action required. Criteria: CRITICAL + in CISA KEV (actively exploited) without patch, OR CRITICAL + EPSS > 30% without patch, OR CRITICAL + active threat signals without patch.

Act Now Prioritize within 24-48h. Criteria: in KEV with patch available, OR CRITICAL + public POC, OR HIGH + EPSS > 10%, OR CRITICAL + active threat, OR any CRITICAL severity.

This Week Schedule remediation this week. Criteria: HIGH severity (CVSS 7.0-8.9). Patch within normal change window.

This Month Plan within 30 days. Criteria: MEDIUM severity (CVSS 4.0-6.9), lower exploitation probability. Include in regular patch cycle.

Monitor Track and reassess. Criteria: LOW severity (CVSS 0.1-3.9), minimal exploitation risk. No immediate action needed.

SSVC AssessmentENISA

SSVC Decision· derived

Scheduled

Exploitation· derived

None

System Exposure· derived

Open

Automatable· derived

Human Impact· derived

Medium

Priority Score

Low Medium High Critical

KEV: 0

EPSS: 0

CVSS: +32

PoC: 0

Weaponized: 0

Threat intel: 0

Gov advisory: 0

Attack Technique

Authentication Bypass CRITICAL

Authentication bypass attacks exploit flaws in the verification mechanisms that control access to systems and applications.

Affected Products (CPE)CVE.org

cpe:2.3:o:fedoraproject:fedora:21:*:*:*:*:*:*:*

cpe:2.3:o:fedoraproject:fedora:22:*:*:*:*:*:*:*

cpe:2.3:a:bestpractical:request_tracker:*:*:*:*:*:*:*:*

cpe:2.3:a:bestpractical:request_tracker:4.2.0:*:*:*:*:*:*:*

cpe:2.3:a:bestpractical:request_tracker:4.2.1:*:*:*:*:*:*:*

cpe:2.3:a:bestpractical:request_tracker:4.2.2:*:*:*:*:*:*:*

cpe:2.3:a:bestpractical:request_tracker:4.2.3:*:*:*:*:*:*:*

cpe:2.3:a:bestpractical:request_tracker:4.2.4:*:*:*:*:*:*:*

cpe:2.3:a:bestpractical:request_tracker:4.2.5:*:*:*:*:*:*:*

cpe:2.3:a:bestpractical:request_tracker:4.2.6:*:*:*:*:*:*:*

cpe:2.3:a:bestpractical:request_tracker:4.2.7:*:*:*:*:*:*:*

cpe:2.3:a:bestpractical:request_tracker:4.2.8:*:*:*:*:*:*:*

cpe:2.3:a:bestpractical:request_tracker:4.2.9:*:*:*:*:*:*:*

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Same weakness CWE-284 – Improper Access Control

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CVE-2015-3306 CRITICAL POC

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CVE-2025-61882 CRITICAL POC

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CVE-2024-0012 CRITICAL POC

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References

Advisories & patches

ADVISORY http://blog.bestpractical.com/2015/02/security-vulnerabilities-in-rt.html REF http://lists.fedoraproject.org/pipermail/package-announce/2015-April/154213.html REF http://lists.fedoraproject.org/pipermail/package-announce/2015-March/154047.html REF http://www.debian.org/security/2015/dsa-3176

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