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Fencer Vulns
critical 9.8

CVE-2021-20045 in the critical feed json

A buffer overflow vulnerability in SMA100 sonicfiles RAC_COPY_TO (RacNumber 36) method allows a remote unauthenticated attacker to potentia…

published 2021-12-08 4 y ago modified 2026-06-17 4 mo ago also EUVD-2021-7508

cvss
9.8
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
25.2%
EPSS 25.2% chance of exploitation in 30 days, percentile 97%
public exploits
0
none known

Summary

A buffer overflow vulnerability in SMA100 sonicfiles RAC_COPY_TO (RacNumber 36) method allows a remote unauthenticated attacker to potentially execute code as the 'nobody' user in the appliance. This vulnerability affected SMA 200, 210, 400, 410 and 500v appliances.

Exploit prediction

25.21% chance of exploitation in the next 30 days, higher than 97% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
NVD 3.1 9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
NVD 2.0 7.5 AV:N/AC:L/Au:N/C:P/I:P/A:P

Affected products

  • SonicWall SonicWall SMA100

Classification

Weakness
  • CWE-120 Buffer Copy without Checking Size of Input

References

Sources

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.