Which products and versions are affected by CVE-2016-1561?

Affected: Ex10000e Firmware (Exagrid) versions 4.8; Ex13000e Firmware (Exagrid) versions 4.8; Ex21000e Firmware (Exagrid) versions 4.8, among others. The full list is in the CVE brief.

Is CVE-2016-1561 being exploited in the wild?

It is not listed in any known-exploited vulnerabilities catalog.

Is CVE-2016-1561 in the CISA KEV catalog?

No, it is not currently listed in the CISA Known Exploited Vulnerabilities catalog.

Is there a public exploit for CVE-2016-1561?

Public exploit code is available.

Is there a fix for CVE-2016-1561?

No fixed version is listed yet; check the vendor advisory for mitigations.

How urgently should CVE-2016-1561 be patched?

Brandefense priority: patch immediately, because it is very likely to be exploited soon.

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Vulnerability Intelligence

CVE-2016-1561

HighPublic exploit

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.

Published Apr 21, 2017 · Updated May 12, 2026

Key Facts

Patch immediately

CVE-2016-1561 is a high-severity vulnerability (CVSS 7.5 v3) affecting Ex10000e Firmware (Exagrid), Ex13000e Firmware (Exagrid), Ex21000e Firmware (Exagrid) and 5 more products.
It is not listed in any known-exploited vulnerabilities catalog. Public exploit code is available.
EPSS estimates a 74% probability of exploitation in the next 30 days.
No fixed version is listed yet; check the vendor advisory for mitigations.
Brandefense priority: patch immediately, because it is very likely to be exploited soon.

CVSS v3

7.5

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

EPSS (30-day exploit likelihood)

74%

Higher than 99.4% of all scored CVEs

Exploited in the wild

No known

Not in a known-exploited catalog

Public exploit code

Available

Proof-of-concept or weaponized module

Get the full CVE-2016-1561 brief as a PDF

Every affected product and fixed release, exploitation status and a first 24 hours response checklist, emailed within minutes.

Description

Affected Products

8 affected entries in total

Product	Affected versions	Fixed in
Ex10000e FirmwareExagrid	4.8	n/a
Ex13000e FirmwareExagrid	4.8	n/a
Ex21000e FirmwareExagrid	4.8	n/a
Ex3000 FirmwareExagrid	4.8	n/a
Ex32000e FirmwareExagrid	4.8	n/a

3 more affected products in the full CVE brief

Timeline

Publicly disclosed
Apr 21, 2017
Last updated
May 12, 2026

Weakness Type

CWE-200 Exposure of Sensitive Information to an Unauthorized Actor

References

FAQ

Common Questions.

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.
Affected: Ex10000e Firmware (Exagrid) versions 4.8; Ex13000e Firmware (Exagrid) versions 4.8; Ex21000e Firmware (Exagrid) versions 4.8, among others. The full list is in the CVE brief.
It is not listed in any known-exploited vulnerabilities catalog.
No, it is not currently listed in the CISA Known Exploited Vulnerabilities catalog.
Public exploit code is available.
No fixed version is listed yet; check the vendor advisory for mitigations.
Brandefense priority: patch immediately, because it is very likely to be exploited soon.

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