Answer in brief
CVE-2020-5135 records a High severity vulnerability in CVE Program Container. The current sources mark it as known exploited. The current feed maps SonicWall/SonicOS (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
A CVSS score is not reported in the current record. Known-exploitation status makes exposure review time-sensitive. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps SonicWall/SonicOS (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| SonicWall/SonicOSgeneric | SonicOS 6.5.4.7-79n and earlier || SonicOS 6.5.1.11-4n and earlier || SonicOS 6.0.5.3-93o and earlier || SonicOSv 6.5.4.4-44v-21-794 and earlier || SonicOS 7.0.0.0-1 | Not reported |
Published upstream
Oct 12, 2020
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Oct 21, 2025
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
May 24, 2026
Added to CISA KEV
Mar 15, 2022
Evidence: source:kev:kev:kev:recordA buffer overflow vulnerability in SonicOS allows a remote attacker to cause Denial of Service (DoS) and potentially execute arbitrary code by sending a malicious request to the firewall. This vulnerability affected SonicOS Gen 6 version 6.5.4.7, 6.5.1.12, 6.0.5.3, SonicOSv 6.5.4.v and Gen 7 version 7.0.0.0.
Quoted source text, attributed separately from HOL analysis.
Answer in brief
CVE-2020-5135 records a High severity vulnerability in CVE Program Container. The current sources mark it as known exploited. The current feed maps SonicWall/SonicOS (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
A CVSS score is not reported in the current record. Known-exploitation status makes exposure review time-sensitive. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps SonicWall/SonicOS (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| SonicWall/SonicOSgeneric | SonicOS 6.5.4.7-79n and earlier || SonicOS 6.5.1.11-4n and earlier || SonicOS 6.0.5.3-93o and earlier || SonicOSv 6.5.4.4-44v-21-794 and earlier || SonicOS 7.0.0.0-1 | Not reported |
Published upstream
Oct 12, 2020
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Oct 21, 2025
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
May 24, 2026
Added to CISA KEV
Mar 15, 2022
Evidence: source:kev:kev:kev:recordA buffer overflow vulnerability in SonicOS allows a remote attacker to cause Denial of Service (DoS) and potentially execute arbitrary code by sending a malicious request to the firewall. This vulnerability affected SonicOS Gen 6 version 6.5.4.7, 6.5.1.12, 6.0.5.3, SonicOSv 6.5.4.v and Gen 7 version 7.0.0.0.
Quoted source text, attributed separately from HOL analysis.