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Critical severity9.8CISA KEVNVD Advisory· Published Dec 8, 2021· Updated Jun 17, 2026

CVE-2021-20038

CVE-2021-20038

Description

A Stack-based buffer overflow vulnerability in SMA100 Apache httpd server's mod_cgi module environment variables allows a remote unauthenticated attacker to potentially execute code as a 'nobody' user in the appliance. This vulnerability affected SMA 200, 210, 400, 410 and 500v appliances firmware 10.2.0.8-37sv, 10.2.1.1-19sv, 10.2.1.2-24sv and earlier versions.

AI Insight

LLM-synthesized narrative grounded in this CVE's description and references.

Affected products

19
  • SonicWall/Sma 200 Firmware3 versions
    cpe:2.3:o:sonicwall:sma_200_firmware:10.2.0.8-37sv:*:*:*:*:*:*:*+ 2 more
    • cpe:2.3:o:sonicwall:sma_200_firmware:10.2.0.8-37sv:*:*:*:*:*:*:*
    • cpe:2.3:o:sonicwall:sma_200_firmware:10.2.1.1-19sv:*:*:*:*:*:*:*
    • cpe:2.3:o:sonicwall:sma_200_firmware:10.2.1.2-24sv:*:*:*:*:*:*:*
  • SonicWall/Sma 210 Firmware3 versions
    cpe:2.3:o:sonicwall:sma_210_firmware:10.2.0.8-37sv:*:*:*:*:*:*:*+ 2 more
    • cpe:2.3:o:sonicwall:sma_210_firmware:10.2.0.8-37sv:*:*:*:*:*:*:*
    • cpe:2.3:o:sonicwall:sma_210_firmware:10.2.1.1-19sv:*:*:*:*:*:*:*
    • cpe:2.3:o:sonicwall:sma_210_firmware:10.2.1.2-24sv:*:*:*:*:*:*:*
  • SonicWall/Sma 400 Firmware3 versions
    cpe:2.3:o:sonicwall:sma_400_firmware:10.2.0.8-37sv:*:*:*:*:*:*:*+ 2 more
    • cpe:2.3:o:sonicwall:sma_400_firmware:10.2.0.8-37sv:*:*:*:*:*:*:*
    • cpe:2.3:o:sonicwall:sma_400_firmware:10.2.1.1-19sv:*:*:*:*:*:*:*
    • cpe:2.3:o:sonicwall:sma_400_firmware:10.2.1.2-24sv:*:*:*:*:*:*:*
  • SonicWall/Sma 410 Firmware3 versions
    cpe:2.3:o:sonicwall:sma_410_firmware:10.2.0.8-37sv:*:*:*:*:*:*:*+ 2 more
    • cpe:2.3:o:sonicwall:sma_410_firmware:10.2.0.8-37sv:*:*:*:*:*:*:*
    • cpe:2.3:o:sonicwall:sma_410_firmware:10.2.1.1-19sv:*:*:*:*:*:*:*
    • cpe:2.3:o:sonicwall:sma_410_firmware:10.2.1.2-24sv:*:*:*:*:*:*:*
  • SonicWall/Sma 500v Firmware3 versions
    cpe:2.3:o:sonicwall:sma_500v_firmware:10.2.0.8-37sv:*:*:*:*:*:*:*+ 2 more
    • cpe:2.3:o:sonicwall:sma_500v_firmware:10.2.0.8-37sv:*:*:*:*:*:*:*
    • cpe:2.3:o:sonicwall:sma_500v_firmware:10.2.1.1-19sv:*:*:*:*:*:*:*
    • cpe:2.3:o:sonicwall:sma_500v_firmware:10.2.1.2-24sv:*:*:*:*:*:*:*
  • SonicWall/SMA 200llm-fuzzy
    Range: <=10.2.0.8-37sv, <=10.2.1.1-19sv, <=10.2.1.2-24sv
  • SonicWall/SMA 210llm-fuzzy
    Range: <=10.2.0.8-37sv, <=10.2.1.1-19sv, <=10.2.1.2-24sv
  • SonicWall/SMA100llm-fuzzy
    Range: <=10.2.0.8-37sv, <=10.2.1.1-19sv, <=10.2.1.2-24sv
  • SonicWall/SonicWall SMA100v5
    Range: 10.2.0.8-37sv and earlier

Patches

Vulnerability mechanics

References

3

News mentions

1