CVE-2018-25294: CEWE Photoshow Buffer Overflow DoS
The National Vulnerability Database has detailed CVE-2018-25294, a high-severity buffer overflow vulnerability impacting CEWE Photoshow version 6.3.4. This flaw resides in the application’s login dialog, allowing an unauthenticated attacker to trigger a denial of service (DoS) condition.
Attackers can exploit this by submitting an oversized input — specifically, 4000 bytes of data — into either the email address or password fields. This malicious input causes the application to crash, effectively denying legitimate users access. The CVSSv3.1 score is 7.5 (HIGH), with a vector of AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H, indicating network-exploitable, low-complexity, unauthenticated attack leading to high availability impact.
While this CVE is from 2018 and affects an older version, it’s a stark reminder of fundamental input validation failures. Such vulnerabilities, even in client-side applications, often point to broader code quality issues. Defenders should ensure all software, especially user-facing applications, is rigorously tested for boundary conditions and input sanitization.
What This Means For You
- If your organization or users still utilize CEWE Photoshow 6.3.4, you must immediately ensure it is updated or replaced. While this specific flaw only causes a DoS, buffer overflows are often precursors to more severe remote code execution vulnerabilities, even if not immediately apparent. Don't dismiss client-side crashes; they're an attacker's foot in the door.
Related ATT&CK Techniques
🛡️ Detection Rules
5 rules · 6 SIEM formats5 detection rules auto-generated for this incident, mapped to MITRE ATT&CK. Sigma YAML is free — export to any SIEM format via the Intel Bot.
Web Application Exploitation Attempt — CVE-2018-25294
title: Web Application Exploitation Attempt — CVE-2018-25294
id: scw-2026-04-26-1
status: experimental
level: high
description: |
Detects common exploitation patterns targeting web applications. Review CVE-2018-25294 advisories for specific indicators.
author: SCW Feed Engine (auto-generated)
date: 2026-04-26
references:
- https://shimiscyberworld.com/posts/nvd-CVE-2018-25294/
tags:
- attack.initial_access
- attack.t1190
logsource:
category: webserver
detection:
selection:
cs-uri-query|contains:
- '..'
- 'SELECT'
- 'UNION'
- '<script'
- 'cmd='
- '/etc/passwd'
condition: selection
falsepositives:
- Legitimate activity from CVE-2018-25294
Source: Shimi's Cyber World · License & reuse
Indicators of Compromise
| ID | Type | Indicator |
|---|---|---|
| CVE-2018-25294 | Buffer Overflow | CEWE Photoshow 6.3.4 |
| CVE-2018-25294 | DoS | CEWE Photoshow 6.3.4 login dialog |
| CVE-2018-25294 | DoS | Oversized input (4000 bytes) in email address field of login dialog |
| CVE-2018-25294 | DoS | Oversized input (4000 bytes) in password field of login dialog |
Written by SCW Vulnerability Desk
Source & Attribution
| Source Platform | NVD |
| Channel | National Vulnerability Database |
| Published | April 27, 2026 at 01:17 UTC |
This content was AI-rewritten and enriched by Shimi's Cyber World based on the original source. All intellectual property rights remain with the original author.
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