CVE-2026-57228

Suricata is a network Intrusion Detection System, Intrusion Prevention System and Network Security Monitoring engine. From 7.0.13 until 7.0.17, the SMTP MIME quoted-printable decoder in src/util-decode-mime.c can read one byte past a heap buffer when a quoted-printable escape sequence is split across traffic chunks and the following chunk contains exactly one byte. Crafted SMTP traffic can trigger the out-of-bounds read and crash Suricata when decode-quoted-printable MIME decoding is enabled. This issue is fixed in version 7.0.17.

Database specific

{
    "cna_assigner":  "GitHub_M",
    "cwe_ids":  [
        "CWE-125"
    ],
    "osv_generated_from":  "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/57xxx/CVE-2026-57228.json"
}

References

Affected packages

Git / github.com/oisf/suricata

Affected ranges

Type

GIT

Repo

https://github.com/oisf/suricata

Events

Introduced

090542709cf620f2053dc03b52ab8aa625dd6eff

Fixed

19880f9d5bbe2b8f8e8867a577848dce2b532c86

Fixed

f707f3208de8216e4eccada5c10e6edce460a82a

Database specific

Show details

{
    "extracted_events":  [
        {
            "introduced":  "7.0.13"
        },
        {
            "fixed":  "7.0.17"
        }
    ],
    "source":  [
        "AFFECTED_FIELD",
        "REFERENCES"
    ]
}

Affected versions

suricata-7.*

suricata-7.0.13

suricata-7.0.14

suricata-7.0.15

suricata-7.0.16

Database specific

source

"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-57228.json"

vanir_signatures

[
    {
        "deprecated":  false,
        "digest":  {
            "function_hash":  "98623418953534337848898699167959870008",
            "length":  4061
        },
        "id":  "CVE-2026-57228-2ce4352d",
        "signature_type":  "Function",
        "signature_version":  "v1",
        "source":  "https://github.com/oisf/suricata/commit/19880f9d5bbe2b8f8e8867a577848dce2b532c86",
        "target":  {
            "file":  "src/util-decode-mime.c",
            "function":  "ProcessQuotedPrintableBodyLine"
        }
    },
    {
        "deprecated":  false,
        "digest":  {
            "line_hashes":  [
                "315485311484170316229897336302972011393",
                "70295851076159791208081007267333358546",
                "216180984332485536395707659131593948796",
                "19528368265794160275142026044536869686",
                "219840484384136021453889294839191698524",
                "118251422581838376707021805572764768567",
                "48772173013802467742612235309309317415",
                "95786594784923355720707801246650111461"
            ],
            "threshold":  0.9
        },
        "id":  "CVE-2026-57228-d0af80ae",
        "signature_type":  "Line",
        "signature_version":  "v1",
        "source":  "https://github.com/oisf/suricata/commit/19880f9d5bbe2b8f8e8867a577848dce2b532c86",
        "target":  {
            "file":  "src/util-decode-mime.c"
        }
    }
]

vanir_signatures_modified

"2026-09-20T08:26:40Z"