CVE-2025-25286Disclosure

LOWCVSS 9.8 · CRITICAL

Exploit discussion active in current signal (2 latest mentions)

Immediate actions

  • Patch affected systems immediately
  • Hunt for exploitation attempts and persistence artifacts
  • Increase monitoring for publicly documented tradecraft

Recommended action window: High priority (within 72h)

NVD description

Crayfish is a collection of Islandora 8 microservices, one of which, Homarus, provides FFmpeg as a microservice. Prior to Crayfish version 4.1.0, remote code execution may be possible in web-accessible installations of Homarus in certain configurations. The issue has been patched in `islandora/crayfish:4.1.0`. Some workarounds are available. The exploit requires making a request against the Homarus's `/convert` endpoint; therefore, the ability to exploit is much reduced if the microservice is not directly accessible from the Internet, so: Prevent general access from the Internet from hitting Homarus. Alternatively or additionally, configure auth in Crayfish to be more strongly required, such that requests with `Authorization` headers that do not validate are rejected before the problematic CLI interpolation occurs.

2.0/ 10 priority

Sources & remediation

Weakness type (CWE)
CWE-150CWE-157

Priority

LOW

Exploitation

NONE

PoC

YES

Patch

AVAILABLE

Momentum

NONE

Threat summary

  • Public PoC is present in monitored signal
  • Patch or workaround signal is available
  • 2 mentions across 1 observed day

What's happening

  • PoC mentioned or linked in 1 signal
  • Patch or workaround mentioned in 1 signal
  • Technical details provided in 1 signal
  • Disclosure: 1 classified signal
  • 2 total mentions across 1 day

Deep dive

Activity timeline2 mentions / 1d
01122Mentions · 2026-05-28: 2PoC Mentioned / Linked · 2026-05-28: 1Patch / Workaround · 2026-05-28: 1Technical Details · 2026-05-28: 105-28
Signal classification2 categories
Disclosure
150.0%
Patch
150.0%
Referenced assets1 URL
By indicator
Full discourse2 posts
  • Hugo | DevOps | Cybersecurity 🇱🇻@HugoValters
    Patch

    CVE-2025-25286 - Critical RCE in Islandora Crayfish/Homarus. CVSS 9.8. Exploits via /convert endpoint. Update to 4.1.0 or apply workarounds immediately. #CVE #infosec #Islandora #cvealert #100DaysOfCode #sysadmin #DevSecOps

    Post summary

    An urgent alert about CVE‑2025‑25286, a critical RCE in Islandora, with CVSS 9.8, recommends updating to 4.1.0 or applying workarounds immediately.

    1000065
    904 followersView on X
  • Hugo | DevOps | Cybersecurity 🇱🇻@HugoValters
    Disclosure

    Daily updates, free CVE database with all needed for experts at no cost, all needed POC, Yara, Sigma Rules, etc., updated each hour https://www.valtersit.com/cve/CVE-2025-25286/

    Post summary

    The post promotes a daily‑updated CVE database that includes CVE‑2025‑25286 and offers PoC, Yara, and Sigma rules for experts, but it does not provide exploit code, patch information, or evidence of active exploitation.

    0000073
    904 followersView on X

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