CVE-2016-1134: Cross-site request forgery (CSRF) vulnerability on BUFFALO BHR-4GRV2 devices with firmware 1.04 and earlier, W
42
This month
HIGH 8.8UPGRADEUPGRADEUPGRADE
CVE-2016-1134 is a high-severity flaw (CVSS 8.8) affecting whr-1166dhp firmware, whr-300hp2 firmware, wmr-300 firmware. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.
Cross-site request forgery (CSRF) vulnerability on BUFFALO BHR-4GRV2 devices with firmware 1.04 and earlier, WEX-300 devices with firmware 1.90 and earlier, WHR-1166DHP devices with firmware 1.90 and earlier, WHR-300HP2 devices with firmware 1.90 and earlier, WHR-600D devices with firmware 1.90 and earlier, WMR-300 devices with firmware 1.90 and earlier, WMR-433 devices with firmware 1.01 and earlier, and WSR-1166DHP devices with firmware 1.01 an
Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score
Am I affected?
Timeline
Published CVE record published
Updated Record last modified
buffalotech whr-1166dhp firmware UPGRADE
Affected: <= 1.90
Fixed in: newer than 1.90
Safe to downgrade to: no unaffected older release
Check your OS release
cat /etc/os-release; uname -r
Debian / Ubuntu
sudo apt update && sudo apt full-upgrade
RHEL / Amazon Linux / Fedora
sudo dnf upgrade --refresh
Windows
Install the latest cumulative update from Windows Update
If no patch exists yet
OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.
buffalotech whr-300hp2 firmware UPGRADE
Affected: <= 1.90
Fixed in: newer than 1.90
Safe to downgrade to: no unaffected older release
Check your OS release
cat /etc/os-release; uname -r
Debian / Ubuntu
sudo apt update && sudo apt full-upgrade
RHEL / Amazon Linux / Fedora
sudo dnf upgrade --refresh
Windows
Install the latest cumulative update from Windows Update
If no patch exists yet
OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.
buffalotech wmr-300 firmware UPGRADE
Affected: <= 1.90
Fixed in: newer than 1.90
Safe to downgrade to: no unaffected older release
Check your OS release
cat /etc/os-release; uname -r
Debian / Ubuntu
sudo apt update && sudo apt full-upgrade
RHEL / Amazon Linux / Fedora
sudo dnf upgrade --refresh
Windows
Install the latest cumulative update from Windows Update
If no patch exists yet
OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.
buffalotech bhr-4grv2 firmware UPGRADE
Affected: <= 1.04
Fixed in: newer than 1.04
Safe to downgrade to: no unaffected older release
Check your OS release
cat /etc/os-release; uname -r
Debian / Ubuntu
sudo apt update && sudo apt full-upgrade
RHEL / Amazon Linux / Fedora
sudo dnf upgrade --refresh
Windows
Install the latest cumulative update from Windows Update
If no patch exists yet
OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.
buffalotech wex-300 firmware UPGRADE
Affected: <= 1.90
Fixed in: newer than 1.90
Safe to downgrade to: no unaffected older release
Check your OS release
cat /etc/os-release; uname -r
Debian / Ubuntu
sudo apt update && sudo apt full-upgrade
RHEL / Amazon Linux / Fedora
sudo dnf upgrade --refresh
Windows
Install the latest cumulative update from Windows Update
If no patch exists yet
OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.
buffalotech whr-600d firmware UPGRADE
Affected: <= 1.90
Fixed in: newer than 1.90
Safe to downgrade to: no unaffected older release
Check your OS release
cat /etc/os-release; uname -r
Debian / Ubuntu
sudo apt update && sudo apt full-upgrade
RHEL / Amazon Linux / Fedora
sudo dnf upgrade --refresh
Windows
Install the latest cumulative update from Windows Update
If no patch exists yet
OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.
Verify at the official sourceNVD · CVE Program · Report a problem with this page Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.
Quick answers
How do I fix CVE-2016-1134?
whr-1166dhp firmware: upgrade to newer than 1.90; whr-300hp2 firmware: upgrade to newer than 1.90; wmr-300 firmware: upgrade to newer than 1.90. Exact commands for each OS are on this page.
Is CVE-2016-1134 being exploited?
CVE-2016-1134 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.
What does CVE-2016-1134 affect?
CVE-2016-1134 affects whr-1166dhp firmware, whr-300hp2 firmware, wmr-300 firmware. Severity is high (CVSS 8.8). Cross-site request forgery (CSRF) vulnerability on BUFFALO BHR-4GRV2 devices with firmware 1.04 and earlier, WEX-300 devices with firmware 1.90 and earlier, WHR-1166DHP devices with firmware 1.90 and earlier, WHR-300HP2 devices with firmwar
How urgent is CVE-2016-1134?
Priority 42/100. High severity
Related CVEs
CVE-2016-1135MEDIUM 6.1MITIGATEMITIGATE Cross-site scripting (XSS) vulnerability on BUFFALO BHR-4GRV2 devices with firmware 1.04 and earlier, WEX-300
CVE-2014-9284HIGH 7.7UPGRADEUPGRADE The Buffalo WHR-1166DHP 1.60 and earlier, WSR-600DHP 1.60 and earlier, WHR-600D 1.60 and earlier, WHR-300HP2 1
PatchTheCVE