CVE-2021-27254: netgear br200_firmware Use of Hard-coded Password
Vulnerability summary
CVE-2021-27254 is a high (CVSS 8.8) Use of Hard-coded Password vulnerability in netgear br200_firmware. EPSS estimates a 0.52% chance of exploitation in the next 30 days, higher than 42.6% of scored vulnerabilities.
Timeline
- 05-03-2021PublishedVulnerability first disclosed.
- 03-08-2024Last modifiedVulnerability information updated.
Description
This vulnerability allows network-adjacent attackers to bypass authentication on affected installations of NETGEAR R7800. Authentication is not required to exploit this vulnerability. The specific flaw exists within the apply_save.cgi endpoint. This issue results from the use of hard-coded encryption key. An attacker can leverage this vulnerability to execute arbitrary code in the context of root. Was ZDI-CAN-12287.
CVSS metrics
4 scores · 2 sources · 3 versions- NVDNIST6.3MediumCVSS:3.0/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
EPSS trend
Probability
0.52%
Chance of exploitation in the next 30 days
Percentile
43%
Versus all other CVEs
30-day change
+0.03 pp
From 0.49% on 18-09-2026
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root cause- CWE-259Use of Hard-coded PasswordThe product contains a hard-coded password, which it uses for its own inbound authentication or for outbound communication to external components.
- CWE-798Use of Hard-coded CredentialsThe product contains hard-coded credentials, such as a password or cryptographic key.
Affected systems
Netgear43 products
- br200_firmware< 5.10.0.5
- br500_firmware< 5.10.0.5
- d7800_firmware< 1.0.1.60
- ex6100v2_firmware< 1.0.1.98
- ex6150v2_firmware< 1.0.1.98
1 vendor · 43 products