Multiple post-authentication stack-based buffer overflow vulnerabilities in the SonicOS management interface due to improper bounds checking
Multiple post-authentication stack-based buffer overflow vulnerabilities in the SonicOS management interface due to improper bounds checking in a API endpoint.
- Published
- Feb 24, 2026
- Updated
- Jun 17, 2026
- EPSS
- 0.3% · 24th percentile
- CWE
- CWE-121
Sign in to follow · You’ll be notified if a followed record enters KEV, gets an exploit or is updated.
Report tools
Action score
19
Monitor
Low priority for now.
- CVSS
- 19 / 40 · 4.9 / 10
- CISA KEV
- 0 / 30 · Not listed
- EPSS
- 0 / 30 · 0.3%
CISA SSVC decision
- Exploitation
- none
- Automatable
- no
- Technical impact
- partial
Vulnrichment: CISA's decision-tree inputs.
Noroxi analysis
No Noroxi analysis for this record yet
We don't hand-write analysis for the hundreds of thousands of vulnerabilities in the database; that wouldn't be honest. For notable, high-impact vulnerabilities our team writes the mechanism, detection and remediation steps.
We use this product, ask for helpAffected systems
| Vendor | Product | CPE |
|---|---|---|
| sonicwall | sonicos | cpe:2.3:o:sonicwall:sonicos |
| sonicwall | nsa 2700 | cpe:2.3:h:sonicwall:nsa_2700 |
| sonicwall | nsa 3700 | cpe:2.3:h:sonicwall:nsa_3700 |
| sonicwall | nsa 4700 | cpe:2.3:h:sonicwall:nsa_4700 |
| sonicwall | nsa 5700 | cpe:2.3:h:sonicwall:nsa_5700 |
| sonicwall | nsa 6700 | cpe:2.3:h:sonicwall:nsa_6700 |
| sonicwall | nssp 10700 | cpe:2.3:h:sonicwall:nssp_10700 |
| sonicwall | nssp 11700 | cpe:2.3:h:sonicwall:nssp_11700 |
| sonicwall | nssp 13700 | cpe:2.3:h:sonicwall:nssp_13700 |
| sonicwall | nssp 15700 | cpe:2.3:h:sonicwall:nssp_15700 |
| sonicwall | nsv270 | cpe:2.3:h:sonicwall:nsv270 |
| sonicwall | nsv470 | cpe:2.3:h:sonicwall:nsv470 |
and 21 more
Affected versions
NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.
- sonicwall sonicosbefore 7.3.2-7010
- sonicwall sonicosbefore 8.2.0-8009
Versions reported by the vendor
Affected version ranges reported by the assigning authority (sonicwall). Independent of NVD's CPE analysis and usually ahead of it.
SonicWall SonicOS
- 7.0.1-5169 and older versions, 7.3.1-7013 and older versions, 8.1.0-8017 and older versionsaffected
Same product
sonicwall: all recordsOther highest-scoring records for the same primary product.
- CVE-2024-53704An Improper Authentication vulnerability in the SSLVPN authentication mechanism allows a remote attacker to bypass authentication.KEV98Now
- CVE-2020-5135A buffer overflow vulnerability in SonicOS allows a remote attacker to cause Denial of Service (DoS) and potentially execute arbitrary code KEV77This week
- CVE-2024-40766An improper access control vulnerability has been identified in the SonicWall SonicOS management access, potentially leading to unauthorizedKEV75This week
- CVE-2022-22274A Stack-based buffer overflow vulnerability in the SonicOS via HTTP request allows a remote unauthenticated attacker to cause Denial of Serv62This week
- CVE-2023-0656A Stack-based buffer overflow vulnerability in the SonicOS allows a remote unauthenticated attacker to cause Denial of Service (DoS), which 42Plan
- CVE-2025-40600Use of Externally-Controlled Format String vulnerability in the SonicOS SSL VPN interface allows a remote unauthenticated attacker to cause 39Monitor
Remediation
Which version to upgrade to
Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.
No fix version is recorded for this entry. Check the references for vendor advisories.
Exploit status
No known public exploit
No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.
Research context
For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.
Timeline
From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.
No dated events beyond publication.
FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).
Patch and commit links
Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.
No commit or PR link among the references.
Credits
All researchersFinders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.
- Vang3lis, Heuzoo and MoyushuiVARAS@IIEfinder
Variant candidates
Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.
- CVE-2025-4060196 days apartA Stack-based buffer overflow vulnerability in the SonicOS SSLVPN service allows a remote unauthenticated attacker to cause Denial of Servic30Monitor
- CVE-2024-12803411 days apartA post-authentication stack-based buffer overflow vulnerability in SonicOS management allows a remote attacker to crash a firewall and poten28Monitor
- CVE-2026-34398 days apartA post-authentication Stack-based Buffer Overflow vulnerability in SonicOS certificate handling allows a remote attacker to crash a firewall19Monitor
- CVE-2026-020664 days apartA post-authentication Stack-based Buffer Overflow vulnerabilities in SonicOS allows a remote attacker to crash a firewall.19Monitor
Chain candidates
An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.
—
Bug bounty scope
No known public program.
Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).
Technical details
Attack conditions
- Anyone who can reach it over the internet can trigger it.
- Administrator privileges are required.
- No user action is required.
- No special conditions are required; it is repeatable.
If successful
- Confidentiality
- none
- Integrity
- none
- Availability
- high · the service can be disrupted
- Attack vector
- Network
- Attack complexity
- Low
- Privileges required
- High
- User interaction
- None
- Scope
- Unchanged
- Confidentiality impact
- None
- Integrity impact
- None
- Availability impact
- High
Weakness class (CWE)
CWE-121 · Stack-based Buffer OverflowCVSS vector
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H
nvd-secondary
Attack context
MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.
MITRE has no CAPEC/ATT&CK mapping for this CWE.
Change log
No changes recorded on tracked fields yet. Score, KEV, exploit maturity and fix status changes appear here.
References
Vendor advisories and official records. Exploit/PoC links are deliberately left out.