CVE-2016-7821: Buffalo WNC01WH devices with firmware version 1.0.0.8 and earlier allow remote attackers to cause a denial of

Q: How do I fix CVE-2016-7821?

wnc01wh firmware: upgrade to newer than 1.0.0.8. Exact commands for each OS are on this page.

Q: Is CVE-2016-7821 being exploited?

CVE-2016-7821 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2016-7821 affect?

CVE-2016-7821 affects wnc01wh firmware. Severity is medium (CVSS 6.5). Buffalo WNC01WH devices with firmware version 1.0.0.8 and earlier allow remote attackers to cause a denial of service against the management screen via unspecified vectors.

Q: How urgent is CVE-2016-7821?

Priority 42/100. No elevated risk signals yet.

This month

MEDIUM 6.5UPGRADE

CVE-2016-7821 is a medium-severity flaw (CVSS 6.5) affecting wnc01wh firmware. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Buffalo WNC01WH devices with firmware version 1.0.0.8 and earlier allow remote attackers to cause a denial of service against the management screen via unspecified vectors.

Why this priority

No elevated risk signals yet

A fixed release or distro patch exists.

Risk facts

CVSS score	6.5 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	Required
EPSS exploit chance	1.8% (top 22%)
CISA exploited list	No
Weakness	CWE-20
Published	2017-06-09
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

2017-06-09 16:29 UTCPublished CVE record published
2026-06-17 00:53 UTCUpdated Record last modified

buffalotech wnc01wh firmware UPGRADE

Affected: <= 1.0.0.8

Fixed in: newer than 1.0.0.8

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 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-2016-7821?

wnc01wh firmware: upgrade to newer than 1.0.0.8. Exact commands for each OS are on this page.

Is CVE-2016-7821 being exploited?

CVE-2016-7821 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-2016-7821 affect?

CVE-2016-7821 affects wnc01wh firmware. Severity is medium (CVSS 6.5). Buffalo WNC01WH devices with firmware version 1.0.0.8 and earlier allow remote attackers to cause a denial of service against the management screen via unspecified vectors.

How urgent is CVE-2016-7821?

Priority 42/100. No elevated risk signals yet.

Related CVEs

CVE-2017-2152 MEDIUM 6.8 UPGRADE WNC01WH firmware 1.0.0.9 and earlier allows authenticated attackers to execute arbitrary OS commands via unspe
CVE-2016-7826 MEDIUM 6.5 UPGRADE Directory traversal vulnerability in Buffalo WNC01WH devices with firmware version 1.0.0.8 and earlier allows
CVE-2016-7825 MEDIUM 6.5 UPGRADE Directory traversal vulnerability in Buffalo WNC01WH devices with firmware version 1.0.0.8 and earlier allows
CVE-2016-7824 HIGH 8.8 UPGRADE Buffalo NC01WH devices with firmware version 1.0.0.8 and earlier allows authenticated attackers to bypass acce
CVE-2016-7823 MEDIUM 4.3 UPGRADE Cross-site scripting vulnerability in Buffalo WNC01WH devices with firmware version 1.0.0.8 and earlier allows

References

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