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Photo Station CVE-2015-4656

MEDIUM
Cross-site Scripting (XSS) (CWE-79)
2015-06-18 cve@mitre.org
PHP XSS Synology Photo Station
4.3
CVSS 2.0 · NVD
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Vulnerability Assessment

Weakness
CWE
CWE-79
OWASP Top 10:2025
A05:2025 - Injection
ASVS 5.0
V1 - Encoding and Sanitization Output encoding, context-aware escaping
MITRE ATT&CK

2 techniques across 2 tactics: Initial Access, Execution

The technique list with ATT&CK links and the kill-chain view is part of the Basic plan and up.

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Impact

CVSS score of 4.3 (MEDIUM). Attack characteristics: network attack vector, M complexity. Public proof-of-concept exploit code is available. EPSS exploitation probability: 0.29%.
Exploit ScenarioDerived

A remote attacker could inject malicious scripts into web pages viewed by other users by sending crafted requests to the affected application.
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

Multiple cross-site scripting (XSS) vulnerabilities in Synology Photo Station before 6.3-2945 allow remote attackers to inject arbitrary web script or HTML via the (1) success parameter to login.php. Rated medium severity (CVSS 4.3), this vulnerability is remotely exploitable. Public exploit code available and no vendor patch available.

RemediationAI

No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Sanitize all user input, use Content-Security-Policy headers, encode output contextually (HTML, JS, URL). Use frameworks with built-in XSS protection.

Affects your stack

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Technical ContextAI · show details

This vulnerability is classified as Cross-Site Scripting (XSS) (CWE-79), which allows attackers to inject malicious scripts into web pages viewed by other users. Multiple cross-site scripting (XSS) vulnerabilities in Synology Photo Station before 6.3-2945 allow remote attackers to inject arbitrary web script or HTML via the (1) success parameter to login.php or (2) crafted URL parameters to index.php, as demonstrated by the t parameter to photo/. Affected products include: Synology Photo Station. Version information: before 6.3.

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  • Exploit and PoC references, threat intelligence from 22 sources
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Severity by source

NVD PRIMARY 4.3 MEDIUM
AV:N/AC:M/Au:N/C:N/I:P/A:N

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

Attack Vector
Network
Attack Complexity
M
Confidentiality
None
Integrity
P
Availability
None

DescriptionCVE.org

Multiple cross-site scripting (XSS) vulnerabilities in Synology Photo Station before 6.3-2945 allow remote attackers to inject arbitrary web script or HTML via the (1) success parameter to login.php or (2) crafted URL parameters to index.php, as demonstrated by the t parameter to photo/.

Threat Intelligence Overview

EPSS Score
0.3%
Top 48% exploitable
Exploit
POC
Public exploit code exists
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 Yes
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
Poc
System Exposure· derived
Open
Automatable· derived
No
Human Impact· derived
Medium

Priority Score

42
Low Medium High Critical
KEV: 0
EPSS: 0
CVSS: +22
PoC: +20
Weaponized: 0
Threat intel: 0
Gov advisory: 0

Attack Technique

Cross-Site Scripting MEDIUM

Cross-Site Scripting occurs when an application accepts untrusted data and sends it to a web browser without proper validation or encoding.

Affected Products (CPE)CVE.org

cpe:2.3:a:synology:photo_station:*:*:*:*:*:*:*:*

More in Photo Station

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An information exposure vulnerability in index.php in Synology Photo Station before 6.7.3-3432 and 6.3-2967 allows remot
CVE-2017-11153 CRITICAL POC
9.8 Aug 08

Deserialization vulnerability in synophoto_csPhotoMisc.php in Synology Photo Station before 6.7.3-3432 and 6.3-2967 allo
CVE-2017-11151 CRITICAL POC
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A vulnerability in synotheme_upload.php in Synology Photo Station before 6.7.3-3432 and 6.3-2967 allows remote attackers
CVE-2016-10329 CRITICAL POC
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Command injection vulnerability in login.php in Synology Photo Station before 6.5.3-3226 allows remote attackers to exec
CVE-2017-11152 HIGH POC
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Directory traversal vulnerability in PixlrEditorHandler.php in Synology Photo Station before 6.7.3-3432 and 6.3-2967 all
CVE-2019-7195 CRITICAL POC
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This external control of file name or path vulnerability allows remote attackers to access or modify system files. Rated
CVE-2019-7194 CRITICAL POC
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This external control of file name or path vulnerability allows remote attackers to access or modify system files. Rated
CVE-2019-7192 CRITICAL POC
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This improper access control vulnerability allows remote attackers to gain unauthorized access to the system. Rated crit
CVE-2016-10322 HIGH POC
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Synology Photo Station before 6.3-2958 allows remote authenticated guest users to execute arbitrary commands via shell m
CVE-2022-27593 CRITICAL POC
9.1 Sep 08

An externally controlled reference to a resource vulnerability has been reported to affect QNAP NAS running Photo Statio
CVE-2017-11154 HIGH POC
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Unrestricted file upload vulnerability in PixlrEditorHandler.php in Synology Photo Station before 6.7.3-3432 and 6.3-296
CVE-2016-10323 HIGH POC
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Synology Photo Station before 6.3-2958 allows local users to gain privileges by leveraging setuid execution of a "synoph

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References

Advisories & patches
REF http://seclists.org/fulldisclosure/2015/May/110 REF http://www.securityfocus.com/bid/74816 REF https://www.synology.com/en-us/support/security/Photo_Station_2945

Search Externally

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