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Critical

Savannah lwIP SMTP client Classic Buffer Overflow

Type: advisorySource: Official CVE List1 source record

lwIP SMTP client does not check the size of inputs, potentially allowing a buffer overflow.

Announced Source revision 1
Original source ↗

CVE-2026-15340

Primary source · Revision 1

Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.

Security context

Source reference: cve:CVE-2026-15340

lwIP SMTP client

Source reference: /containers/cna/affected/0/product

Affected versions
Not stated in this record
Fixed versions
Not stated in this record
Prerequisites
Not stated in this record

Structured affected-version data

Original package identities and version rules from this source.

[
  {
    "vendor": "Savannah",
    "product": "lwIP SMTP client",
    "versions": [
      {
        "status": "affected",
        "version": "2.2.1"
      },
      {
        "status": "unaffected",
        "version": "patch_125_smtp_txbuf.diff"
      },
      {
        "status": "unaffected",
        "version": "git commit (614420f82c8729d070e01464c0dddb3c9525c772)"
      }
    ],
    "defaultStatus": "unaffected"
  }
]
Related CVEs
CVE-2026-15340

Source reference: /cveMetadata/cveId

Publisher severity

critical

Source reference: /containers/cna/metrics

Event
#17016 · Revision 1
Added to Heist Feed
Publisher date
Read the original announcement