CVE-2023-5970 — Improper authentication in the SMA100 SSL-VPN virtual office portal allows a rem

Improper authentication in the SMA100 SSL-VPN virtual office portal allows a remote authenticated attacker to create an identical external domain user using accent characters, resulting in an MFA bypass.

01What is this vulnerability?

Improper authentication in the SMA100 SSL-VPN virtual office portal allows a remote authenticated attacker to create an identical external domain user using accent characters, resulting in an MFA bypass.

02Affected products

Vendor	Product	Versions
SonicWall	SMA100	10.2.1.9-57sv and earlier versions

03Active exploitation status

Not currently listed on the CISA Known Exploited Vulnerabilities (KEV) catalog. EPSS is the best forward-looking signal — see the EPSS row above.

04Recommended remediation

• Patch to a fixed version listed in the vendor advisory (see references below).
• Mitigate with WAF rules, network egress filters, or feature flags where the patch is not yet available.
• Hunt historical logs for exploitation indicators — see Detection signatures below.

05Technical details

For the full vendor write-up, exploit chains, and reference implementations, see the references list in section 09.

06Detection signatures

Ask SARA in chat to draft a starting detection for this CVE in your stack of choice.

07Related CVEs

No directly-cited follow-up CVEs in the KB record for this advisory. The references list in section 09 carries the vendor cross-references.

08Timeline

• Published: 2023-12-05T20:20:01.534Z
• Last modified: 2024-08-02T08:14:25.142Z

09References

• psirt.global.sonicwall.com — https://psirt.global.sonicwall.com/vuln-detail/SNWLID-2023-0018