CVE-2021-20091 json
The web interfaces of Buffalo WSR-2533DHPL2 firmware version <= 1.02 and WSR-2533DHP3 firmware version <= 1.24 do not properly sanitize use…
published 2021-04-29 5 y ago modified 2026-06-17 4 mo ago also EUVD-2021-7548
- cvss
- 8.8
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 8.5%
- EPSS 8.5% chance of exploitation in 30 days, percentile 95%
- public exploits
- 0
- none known, plus a Nuclei check
Summary
The web interfaces of Buffalo WSR-2533DHPL2 firmware version <= 1.02 and WSR-2533DHP3 firmware version <= 1.24 do not properly sanitize user input. An authenticated remote attacker could leverage this vulnerability to alter device configuration, potentially gaining remote code execution.
Exploit prediction
8.46% chance of exploitation in the next 30 days, higher than 95% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- Nuclei template Buffalo WSR-2533DHPL2 - Configuration File Injection nuclei detection template
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.1 | 8.8 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
| NVD | 2.0 | 6.5 | AV:N/AC:L/Au:S/C:P/I:P/A:P |
Affected products
- n/a Buffalo WSR-2533DHPL2, Buffalo WSR-2533DHP3
References
-
tenable.com
/security/research/tra-2021-13
third-party-advisory
Sources
- CVE List CVE-2021-20091
- NVD CVE-2021-20091
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.