CVE-2026-3439 json
A post-authentication Stack-based Buffer Overflow vulnerability in SonicOS certificate handling allows a remote attacker to crash a firewal…
published 2026-03-04 8 mo ago modified 2026-06-17 4 mo ago also EUVD-2026-9387
- cvss
- 4.9
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.3%
- EPSS 0.3% chance of exploitation in 30 days, percentile 20%
- public exploits
- 0
- none known
Summary
A post-authentication Stack-based Buffer Overflow vulnerability in SonicOS certificate handling allows a remote attacker to crash a firewall.
Patch / fix
- sonicwall sonicos 7.3.2-7010, 8.2.0-8009
CISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- partial
- Assessed
- 8 mo ago
Exploit prediction
0.28% chance of exploitation in the next 30 days, higher than 20% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CISA ADP | 3.1 | 4.9 | CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H |
| CNA | 3.1 | 4.9 | CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H |
Affected products
- SonicWall SonicOS
Classification
- Weakness
-
- CWE-121 Stack-based Buffer Overflow
References
-
psirt.global.sonicwall.com
/vuln-detail/SNWLID-2026-0001
vendor-advisory
Sources
- CVE List CVE-2026-3439
- NVD CVE-2026-3439
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