CVE-2021-28207 json
ASUS BMC's firmware: path traversal - Get Help file function
published 2021-04-06 5 y ago modified 2026-06-17 4 mo ago also EUVD-2021-14897
- cvss
- 4.9
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 2.0%
- EPSS 2.0% chance of exploitation in 30 days, percentile 80%
- public exploits
- 0
- none known
Summary
The specific function in ASUS BMC’s firmware Web management page (Get Help file function) does not filter the specific parameter. As obtaining the administrator permission, remote attackers can use the means of path traversal to access system files.
Exploit prediction
1.97% chance of exploitation in the next 30 days, higher than 80% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 4.9 | CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N |
| NVD | 3.1 | 4.9 | CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N |
| NVD | 2.0 | 6.8 | AV:N/AC:L/Au:S/C:C/I:N/A:N |
Affected products
- ASUS BMC firmware for ASMB9-iKVM
- ASUS BMC firmware for RS720A-E9-RS24-E
- ASUS BMC firmware for RS700A-E9-RS4
- ASUS BMC firmware for RS700-E9-RS4
- ASUS BMC firmware for ESC4000 G4X
- ASUS BMC firmware for RS700-E9-RS12
- ASUS BMC firmware for RS100-E10-PI2
- ASUS BMC firmware for RS300-E10-PS4
- ASUS BMC firmware for RS300-E10-RS4
- ASUS BMC firmware for RS500A-E9-PS4
- ASUS BMC firmware for RS500A-E9-RS4
- ASUS BMC firmware for RS500A-E9 RS4
- ASUS BMC firmware for E700 G4
- ASUS BMC firmware for WS C422 PRO/SE
- ASUS BMC firmware for WS X299 PRO/SE
- ASUS BMC firmware for Z11PA-U12
- ASUS BMC firmware for Z11PA-U12/10G-2S
- ASUS BMC firmware for KNPA-U16
- ASUS BMC firmware for ESC4000 DHD G4
- ASUS BMC firmware for ESC4000 G4
- ASUS BMC firmware for RS720Q-E9-RS24-S
- ASUS BMC firmware for RS720Q-E9-RS8
- ASUS BMC firmware for RS720Q-E9-RS8-S
- ASUS BMC firmware for Z11PA-D8
- ASUS BMC firmware for Z11PA-D8C
- ASUS BMC firmware for RS720-E9-RS24-U
- ASUS BMC firmware for RS720-E9-RS8-G
- ASUS BMC firmware for RS500-E9-PS4
- ASUS BMC firmware for Pro E800 G4
- ASUS BMC firmware for RS500-E9-RS4
- ASUS BMC firmware for RS500-E9-RS4-U
- ASUS BMC firmware for RS520-E9-RS12-E
- ASUS BMC firmware for RS520-E9-RS8
- ASUS BMC firmware for ESC8000 G4
- ASUS BMC firmware for ESC8000 G4/10G
- ASUS BMC firmware for RS720-E9-RS12-E
- ASUS BMC firmware for WS C621E SAGE
- ASUS BMC firmware for RS500A-E10-PS4
- ASUS BMC firmware for RS500A-E10-RS4
- ASUS BMC firmware for RS700A-E9-RS12V2
- ASUS BMC firmware for RS700A-E9-RS4V2
- ASUS BMC firmware for RS720A-E9-RS12V2
- ASUS BMC firmware for RS720A-E9-RS24V2
- ASUS BMC firmware for Z11PR-D16
Classification
- Weakness
-
- CWE-22 Improper Limitation of a Pathname to a Restricted Directory
References
-
asus.com
/content/ASUS-Product-Security-Advisory/
vendor-advisory
-
asus.com
/tw/support/callus/
vendor-advisory
-
twcert.org.tw
/tw/cp-132-4577-60153-1.html
third-party-advisory
Sources
- CVE List CVE-2021-28207
- NVD CVE-2021-28207
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.