SO
Product
SonicOS
by SonicWall · last CVE Aug 5, 2026
On CISA KEVExploited in the wildRansomware-linked
77
CVEs
3
On KEV
9.8
Max CVSS
0
New 30D
Severity mix
Critical 15High 30Medium 31Low 0
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CVECVSSEPSSPublishedSummary · affected versions
CVE-2026-0205
6.8
0%
Apr 29
A post-authentication Path Traversal vulnerability in SonicOS allows an attacker to interact with usually restricted services
Affected: 6.5.5.1-6n and older versions; 7.0.1-5169 and older versions; 7.3.1-7013 and older versions; 8.1.0-8017 and older versions
CVE-2026-0516
6.5
0%
Aug 5
A improper neutralization of HTTP Headers for Scripting Syntax vulnerability in SonicOS could allow a remote attacker to manipulate the Host header and redirect firewall…
Affected: 6.5.5.2-28n and older versions; 7.0.1-5169 and older versions; 7.3.3-7015 and older versions; 8.2.1-8010 and older versions
CVE-2024-29013
6.5
1%
Jun 20
Heap-based buffer overflow vulnerability in the SonicOS SSL-VPN allows an authenticated remote attacker to cause Denial of Service (DoS) via memcpy function
Affected: before 7.0.1-5161; 7.1.1 before 7.1.1-7058; 7.1.2 before 7.1.2-7019
CVE-2023-41712
6.5
1%
Oct 17
SonicOS post-authentication Stack-Based Buffer Overflow Vulnerability in the SSL VPN plainprefs.exp URL endpoint leads to a firewall crash
Affected: before 7.0.1-5145; before 6.5.4.4-44v-21-2340; before 6.5.4.13-105n
CVE-2023-41711
6.5
1%
Oct 17
SonicOS post-authentication Stack-Based Buffer Overflow Vulnerability in the sonicwall.exp, prefs.exp URL endpoints lead to a firewall crash
Affected: before 7.0.1-5145; before 6.5.4.4-44v-21-2340; before 6.5.4.13-105n
CVE-2023-39280
6.5
1%
Oct 17
SonicOS p ost-authentication Stack-Based Buffer Overflow vulnerability in the ssoStats-s.xml, ssoStats-s.wri URL endpoints leads to a firewall crash
Affected: before 7.0.1-5145; before 6.5.4.4-44v-21-2340; before 6.5.4.13-105n
CVE-2023-39279
6.5
1%
Oct 17
SonicOS post-authentication Stack-Based Buffer Overflow vulnerability in the getPacketReplayData.json URL endpoint leads to a firewall crash
Affected: before 7.0.1-5145; before 6.5.4.4-44v-21-2340; before 6.5.4.13-105n
CVE-2023-39278
6.5
1%
Oct 17
SonicOS post-authentication user assertion failure leads to Stack-Based Buffer Overflow vulnerability via main.cgi leads to a firewall crash
Affected: before 7.0.1-5145; before 6.5.4.4-44v-21-2340; before 6.5.4.13-105n
CVE-2023-39277
6.5
1%
Oct 17
SonicOS post-authentication stack-based buffer overflow vulnerability in the sonicflow.csv and appflowsessions.csv URL endpoints leads to a firewall crash
Affected: before 7.0.1-5145; before 6.5.4.4-44v-21-2340; before 6.5.4.13-105n
CVE-2023-39276
6.5
1%
Oct 17
SonicOS post-authentication stack-based buffer overflow vulnerability in the getBookmarkList.json URL endpoint leads to a firewall crash
Affected: before 7.0.1-5145; before 6.5.4.4-44v-21-2340; before 6.5.4.13-105n
CVE-2020-5141
6.5
1%
Oct 12
A vulnerability in SonicOS allows a remote unauthenticated attacker to brute force Virtual Assist ticket ID in the firewall SSLVPN service
Affected: through 5.9.1.13; 6.0.0.0 through 6.0.5.3; 6.5.0.0 through 6.5.1.11; 6.5.4.0 through 6.5.4.7; 7.0.0.0
CVE-2020-5136
6.5
1%
Oct 12
A buffer overflow vulnerability in SonicOS allows an authenticated attacker to cause Denial of Service (DoS) in the SSL-VPN and virtual assist portal, which leads to a firewall…
Affected: through 5.9.1.13; 6.0.0.0 through 6.0.5.3; 6.5.0.0 through 6.5.1.11; 6.5.4.0 through 6.5.4.7; 7.0.0.0
CVE-2020-5134
6.5
1%
Oct 12
A vulnerability in SonicOS allows an authenticated attacker to cause out-of-bound invalid file reference leads to a firewall crash
Affected: through 6.0.5.3; 6.5.0.0 through 6.5.1.11; 7.0.0.0
CVE-2019-7474
6.5
1%
Apr 2
A vulnerability in SonicWall SonicOS and SonicOSv, allow authenticated read-only admin to leave the firewall in an unstable state by downloading certificate with specific…
Affected: through 5.9.1.10; 6.0.5.3-86o; 6.2.7.3; 6.2.7.8; 6.4.0.0; 6.5.1.3; +3 more
CVE-2021-20031
6.1
13%
Oct 12
A Host Header Redirection vulnerability in SonicOS potentially allows a remote attacker to redirect firewall management users to arbitrary web domains
Affected: through 7.0.1-r1262; through 7.0.1-r1283; through 7.0.1-r579; through 6.5.4.7; through 6.5.1.12; through 6.0.5.3-94o; +1 more
CVE-2020-5142
6.1
1%
Oct 12
A stored cross-site scripting (XSS) vulnerability exists in the SonicOS SSLVPN web interface
Affected: through 5.9.1.13; 6.0.0.0 through 6.0.5.3; 6.5.0.0 through 6.5.1.11; 6.5.4.0 through 6.5.4.7; 7.0.0.0
CVE-2021-3449
5.9
64%
Mar 25
NULL pointer deref in signature_algorithms processing
Affected: 7.0.1.0
CVE-2018-9867
5.5
0%
Feb 19
In SonicWall SonicOS, administrators without full permissions can download imported certificates
Affected: 5.9.1.10 and earlier; 6.2.7.3; 6.5.1.3; 6.5.2.2; 6.5.3.1; 6.2.7.8; +3 more
CVE-2018-5281
5.4
3%
Jan 8
SonicWall SonicOS on Network Security Appliance (NSA) 2017 Q4 devices has XSS via the CFS Custom Category and Cloud AV DB Exclusion Settings screens
Affected: All versions, or not specified
CVE-2018-5280
5.4
3%
Jan 8
SonicWall SonicOS on Network Security Appliance (NSA) 2016 Q4 devices has XSS via the Configure SSO screens
Affected: 6.2.7.0; 6.2.9.0; 6.5.0.0; 6.5.1.0; 6.5.2.0
CVE-2020-5143
5.3
2%
Oct 12
SonicOS SSLVPN login page allows a remote unauthenticated attacker to perform firewall management administrator username enumeration based on the server responses
Affected: through 5.9.1.13; 6.0.0.0 through 6.0.5.3; 6.5.0.0 through 6.5.1.11; 6.5.4.0 through 6.5.4.7; 7.0.0.0
CVE-2020-5132
5.3
1%
Sep 30
SonicWall SSL-VPN products and SonicWall firewall SSL-VPN feature misconfiguration leads to possible DNS flaw known as domain name collision vulnerability
Affected: 6.5.4.6-79n
CVE-2020-5130
5.3
1%
Jul 17
SonicOS SSLVPN LDAP login request allows remote attackers to cause external service interaction (DNS) due to improper validation of the request
Affected: through 6.5.4.4-44n
CVE-2019-12265
5.3
60%
Aug 9
Wind River VxWorks 6.5, 6.6, 6.7, 6.8, 6.9.3 and 6.9.4 has a Memory Leak in the IGMPv3 client component
Affected: 5.9.0.0 through 5.9.0.7; 5.9.1.0. through 5.9.1.12; 6.2.0.0 through 6.2.3.1; 6.2.4.0 through 6.2.4.3; 6.2.5.0 through 6.2.5.3; 6.2.6.0 through 6.2.6.1; +10 more
CVE-2026-0206
4.9
1%
Apr 29
A post-authentication Stack-based Buffer Overflow vulnerabilities in SonicOS allows a remote attacker to crash a firewall
Affected: 6.5.5.1-6n and older versions; 7.0.1-5169 and older versions; 7.3.1-7013 and older versions; 8.1.0-8017 and older versions
CVE-2026-3439
4.9
0%
Mar 4
A post-authentication Stack-based Buffer Overflow vulnerability in SonicOS certificate handling allows a remote attacker to crash a firewall
Affected: 7.0.1-5169 and older versions; 7.3.1-7013 and older versions; 8.1.0-8017 and older versions
CVE-2026-0402
4.9
0%
Feb 24
A post-authentication Out-of-bounds Read vulnerability in SonicOS allows a remote attacker to crash a firewall
Affected: 7.0.1-5169 and older versions; 7.3.1-7013 and older versions; 8.1.0-8017 and older versions
CVE-2026-0401
4.9
0%
Feb 24
A post-authentication NULL Pointer Dereference vulnerability in SonicOS allows a remote attacker to crash a firewall
Affected: 7.0.1-5169 and older versions; 7.3.1-7013 and older versions; 8.1.0-8017 and older versions
CVE-2026-0400
4.9
0%
Feb 24
A post-authentication Format String vulnerability in SonicOS allows a remote attacker to crash a firewall
Affected: 7.0.1-5169 and older versions; 7.3.1-7013 and older versions; 8.1.0-8017 and older versions
CVE-2026-0399
4.9
0%
Feb 24
Multiple post-authentication stack-based buffer overflow vulnerabilities in the SonicOS management interface due to improper bounds checking in a API endpoint
Affected: 7.0.1-5169 and older versions; 7.3.1-7013 and older versions; 8.1.0-8017 and older versions
CVE-2024-12806
4.9
1%
Jan 9
A post-authentication absolute path traversal vulnerability in SonicOS management allows a remote attacker to read an arbitrary file
Affected: 6.5.4.15-117n and older versions; 7.0.1-5161 and older version; 7.1.2-7019; 8.0.0-8035
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