CVE-2025-53970: DOS SS1 · Unrestricted File Upload
Affects DOS SS1Source CVE Database V5
Not known to be exploited · CVSS 9.8 Critical.
Data as of 26 Oct 2026, 06:26 UTC
- EPSS
- 0.5% chance of exploitation in 30 days – higher than 44% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:HExploitation evidence
Disclosed: evidence found.
CVE published 28 Aug 2025
Detectable: no evidence on record.
No public nuclei template indexed
Weaponised: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 2026-10-26.
What to do
AI-suggested
Immediate mitigation should focus on restricting exposure of SS1 services to untrusted networks, ideally isolating or segmenting affected systems to limit remote access. Network-level controls such as firewalls and intrusion prevention systems should block unauthorized access to the SS1 service ports. Organizations should monitor network traffic and system logs for unusual file upload activities or command execution patterns. Since no patches are currently available, consider deploying application-layer proxies or web application firewalls (WAFs) configured to detect and block suspicious file uploads, especially those with executable or script extensions. Implement strict file type validation and content inspection where possible. If feasible, disable or restrict file upload functionality temporarily until a vendor patch is released. Regular backups and incident response plans should be reviewed and updated to prepare for potential exploitation. Engage with DOS Co., Ltd. for patch timelines and apply updates promptly once available. Additionally, conduct thorough vulnerability assessments and penetration testing focused on SS1 to identify any exploitation attempts.
Description
SS1 Ver.16.0.0.10 and earlier (Media version:16.0.0a and earlier) allows a remote unauthenticated attacker to upload arbitrary files and execute OS commands with SYSTEM privileges.