OS command injection vulnerability in BUFFALO wireless LAN routers allows a logged-in user to execute arbitrary OS commands.

published 2024-04-15 2 y ago modified 2026-06-17 4 mo ago also EUVD-2024-23317

cvss: 4.2; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 0.5%; EPSS 0.5% chance of exploitation in 30 days, percentile 46%
public exploits: 0; none known

Patch / fix

fixed in 7

buffalo wsr-2533dhp_firmware 1.07
buffalo wsr-2533dhpl_firmware 1.07
buffalo wsr-2533dhp2_firmware 1.11
buffalo wsr-a2533dhp2_firmware 1.11
buffalo wcr-1166ds_firmware 1.33
buffalo wsr-1166dhp_firmware 1.15
buffalo wsr-1166dhp2_firmware 1.15

CISA SSVC

Exploitation: none
Automatable: no
Technical impact: total
Assessed: 2 y ago (2024-07-15)

Exploit prediction

0.55% chance of exploitation in the next 30 days, higher than 46% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by	version	score	vector
CISA ADP	3.1	4.2	CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:L
CNA	3.1	4.2	CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:L

Affected products

BUFFALO INC. WCR-1166DS
BUFFALO INC. WSR-1166DHP
BUFFALO INC. WSR-1166DHP2
BUFFALO INC. WSR-2533DHP
BUFFALO INC. WSR-2533DHPL
BUFFALO INC. WSR-2533DHP2
BUFFALO INC. WSR-A2533DHP2
buffalo_inc wcr_1166ds

Classification

Weakness

CWE-78 Improper Neutralization of Special Elements used in an OS Command

References

buffalo.jp /news/detail/20240410-01.html
vendor-advisory
jvn.jp /en/jp/JVN58236836/
third-party-advisory

Sources

CVE List CVE-2024-26023
NVD CVE-2024-26023

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