CVE-2021-47821
Published: 16 January 2026
Summary
CVE-2021-47821 is a high-severity Improper Validation of Specified Quantity in Input (CWE-1284) vulnerability in Raimersoft (inferred from references). Its CVSS base score is 7.5 (High).
Operationally, ranked at the 2.1th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog; a public proof-of-concept is referenced.
NVD Description
RarmaRadio 2.72.8 contains a denial of service vulnerability that allows attackers to crash the application by overflowing network configuration fields with large character buffers. Attackers can generate a 100,000 character buffer and paste it into multiple network settings fields to…
more
trigger application instability and potential crash.
Deeper analysisAI
CVE-2021-47821 is a denial of service vulnerability in RarmaRadio version 2.72.8. The flaw enables attackers to crash the application by overflowing network configuration fields with large character buffers, such as a 100,000-character buffer pasted into multiple network settings fields, resulting in application instability and potential crash. It is linked to CWE-1284 and carries a CVSS v3.1 base score of 7.5 (AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N).
Remote attackers require no privileges and no user interaction to exploit the vulnerability over the network with low complexity. Exploitation causes a denial of service by triggering application instability and crash.
Advisories and related resources include the vendor site at http://www.raimersoft.com/, a proof-of-concept exploit documented at https://www.exploit-db.com/exploits/49906, and a VulnCheck advisory at https://www.vulncheck.com/advisories/rarmaradio-denial-of-service. These references provide further details on the issue, though specific patch or mitigation guidance is not detailed in the available information.
Details
- CWE(s)