CVE-2026-86530BUFFALO Wi-Fi products handle some web form input improperly to assemble command line strings internally.
Updated under an hour ago ()
Does this affect you?
It affects BUFFALO INC. WSR-300HP and 1 other product. Add what you run to find out whether that includes you.
EPSS puts the chance of exploitation in the next 30 days at 0.36%, higher than 28% of scored CVEs.
Do this next
Free account, 1 product
BUFFALO Wi-Fi products handle some web form input improperly to assemble command line strings internally. An administrative user may send a crafted HTTP request and execute an arbitrary OS command.
- CVSS
- 7.2 HIGH (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
- Weakness (CWE)
- CWE-78
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- 0.36% (percentile 28)
- Assigned by
- jpcert
- NVD analysis
- Awaiting Analysis
- Record last updated
- Sep 30, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
BUFFALO INC. WSR-300HP buffalo:wsr_300hp (from the name) | before Ver.2.55 | CNA record |
BUFFALO INC. WEX-G300 buffalo:wex_g300 (from the name) | before Ver.1.71 | CNA record |
References
- https://www.buffalo.jp/news/detail/20260928-01.html
- https://jvn.jp/en/vu/JVNVU94863997/
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.