ICSA-26-279-02: Savannah lwIP SMTP client
CISA advisory · released 2026-10-06
Source record Collected from CISA's CSAF advisory feed
- Distribution label in the document: TLP:WHITE
- Revision 1, 2026-10-06 (final)
CISA's summary
Advisory Summary: Successful exploitation of this vulnerability could crash the device being accessed; a buffer overflow condition may allow remote code execution.
Products, as the advisory lists them
| Vendor | Product | Version |
|---|---|---|
| Savannah | lwIP SMTP client | 2.2.1 |
DeSpy has not checked any unit, hardware revision or firmware.
Vulnerabilities in this advisory
- CVE-2026-15340 · CWE-120
lwIP SMTP client does not check the size of inputs, potentially allowing a buffer overflow.
Acknowledgments, as the advisory lists them
- xchglabs: reported this vulnerability directly to Savannah and then disclosed once the fix was released
The advisory's legal notice
This product is provided subject to this Notification (https://www.cisa.gov/notification) and this Privacy & Use policy (https://www.cisa.gov/privacy-policy).
Sources
DeSpy's copy of this version is dated 2026-10-06.
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