CVE-2016-1135: Cross-site scripting (XSS) vulnerability on BUFFALO BHR-4GRV2 devices with firmware 1.04 and earlier, WEX-300

Routine

MEDIUM 6.1MITIGATEMITIGATEMITIGATE

CVE-2016-1135 is a medium-severity flaw (CVSS 6.1) affecting wmr-300 firmware, wex-300 firmware, wmr-433 firmware. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Cross-site scripting (XSS) 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 and earli

Why this priority

No elevated risk signals yet

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	6.1 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	Required
EPSS exploit chance	0.8% (top 45%)
CISA exploited list	No
Weakness	CWE-79
Published	2016-01-22
Last modified	2026-06-17

Publisher (CNA): JPCERT/CC · Vendor: buffalotech

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2016-01-22 11:59 UTCPublished CVE record published
2026-06-17 00:41 UTCUpdated Record last modified

buffalotech wmr-300 firmware MITIGATE

Affected: 1.90

Fixed in: no fixed release known

Safe to downgrade to: a release before 1.90

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 MITIGATE

Affected: 1.90

Fixed in: no fixed release known

Safe to downgrade to: a release before 1.90

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-433 firmware MITIGATE

Affected: 1.01

Fixed in: no fixed release known

Safe to downgrade to: a release before 1.01

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 MITIGATE

Affected: 1.04

Fixed in: no fixed release known

Safe to downgrade to: a release before 1.04

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 MITIGATE

Affected: 1.90

Fixed in: no fixed release known

Safe to downgrade to: a release before 1.90

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-1166dhp firmware MITIGATE

Affected: 1.90

Fixed in: no fixed release known

Safe to downgrade to: a release before 1.90

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 source NVD · 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-2016-1135?

wmr-300 firmware: mitigate or apply the listed mitigation; wex-300 firmware: mitigate or apply the listed mitigation; wmr-433 firmware: mitigate or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2016-1135 being exploited?

CVE-2016-1135 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-2016-1135 affect?

CVE-2016-1135 affects wmr-300 firmware, wex-300 firmware, wmr-433 firmware. Severity is medium (CVSS 6.1). Cross-site scripting (XSS) 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

How urgent is CVE-2016-1135?

Priority 35/100. No elevated risk signals yet.

Related CVEs

CVE-2016-1134 HIGH 8.8 UPGRADE UPGRADE Cross-site request forgery (CSRF) vulnerability on BUFFALO BHR-4GRV2 devices with firmware 1.04 and earlier, W
CVE-2014-9284 HIGH 7.7 UPGRADE UPGRADE The Buffalo WHR-1166DHP 1.60 and earlier, WSR-600DHP 1.60 and earlier, WHR-600D 1.60 and earlier, WHR-300HP2 1

References

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