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Fencer Intel
high 7.5

CVE-2016-1561 in the critical feed json

ExaGrid appliances with firmware before 4.8 P26 have a default SSH public key in the authorized_keys file for root, which allows remote att…

published 2017-04-21 9 y ago modified 2026-06-17 4 mo ago also EUVD-2016-2656

cvss
7.5
version 3.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
74.4%
EPSS 74.4% chance of exploitation in 30 days, percentile 99.4%
public exploits
2
Metasploit, Exploit-DB

Summary

ExaGrid appliances with firmware before 4.8 P26 have a default SSH public key in the authorized_keys file for root, which allows remote attackers to obtain SSH access by leveraging knowledge of a private key from another installation or a firmware image.

Timeline

  1. First public exploit (Metasploit exploit/linux/ssh/exagrid_known_privkey)
  2. Published

Exploit prediction

74.44% chance of exploitation in the next 30 days, higher than 99.4% of all scored CVEs (FIRST EPSS, 2026-11-09).

Exploits and checks

  • Metasploit exploit/linux/ssh/exagrid_known_privkey ExaGrid Known SSH Key and Default Password metasploit exploit, excellent rank, 2016-04-07
  • EDB-41680 ExaGrid - Known SSH Key and Default Password (Metasploit) remote, 2016-04-07
  • packetstormsecurity.com http://packetstormsecurity.com/files/136634/ExaGrid-Known-SSH-Key-Default-Password.html referenced PoC, tagged "exploit" by a source, unverified
  • community.rapid7.com https://community.rapid7.com/community/infosec/blog/2016/04/07/r7-2016-04-exagrid-backdoor-ssh-keys-and-hardcoded-credentials referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
NVD 3.0 7.5 CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
NVD 2.0 5.0 AV:N/AC:L/Au:N/C:P/I:N/A:N

Classification

Weakness
  • CWE-200 Exposure of Sensitive Information to an Unauthorized Actor

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.