iRZ RUH2 before 2b does not validate firmware patches, which allows remote authenticated users to modify data or cause a denial of service…

published 2016-05-30 10 y ago modified 2026-06-17 4 mo ago also EUVD-2016-3393

cvss: 7.2; version 3.0, NVD
cisa kev: Not listed; not in CISA's catalog
epss: 0.7%; EPSS 0.7% chance of exploitation in 30 days, percentile 52%
public exploits: 0; none known

iRZ RUH2 before 2b does not validate firmware patches, which allows remote authenticated users to modify data or cause a denial of service via unspecified vectors.

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

cisa ICSA-16-138-01A updated 2025-06-05 cvss 7.2

IRZ RUH2 3G Firmware Overwrite Vulnerability (Update A)

iRZ RUH2
affected: mitigation “iRZ recommends users replace the RUH2 with either the RUH2b or RUH3. Additional information on this vulnerability is available at: (http://www.irz.net/en/support.)”

From CISA ICS and IT advisories (CSAF, https://github.com/cisagov/CSAF), a U.S. Government work; changed: reduced to products, statuses and remediations. CISA notification · csaf

Exploit prediction

0.68% chance of exploitation in the next 30 days, higher than 52% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by	version	score	vector
NVD	3.0	7.2	CVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
NVD	2.0	8.0	AV:N/AC:L/Au:S/C:P/I:P/A:C

Classification

Weakness

CWE-345 Insufficient Verification of Data Authenticity

References

ics-cert.us-cert.gov /advisories/ICSA-16-138-01
third-party-advisory, us-government-resource

Sources

CVE List CVE-2016-2309
NVD CVE-2016-2309

Fencer Vulns 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.

Summary