redis-server RESTORE invalid memory access may allow remote code execution

{
  "id": "e6f5010f0f1eb2488029db426d5d2ab0ab41b4ad1d5589208019e8f2549fafe8",
  "url": "https://osv.dev/vulnerability/CVE-2026-25243",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "redis-server RESTORE invalid memory access may allow remote code execution",
    "summary": "Redis is an in-memory data structure store. In versions of redis-server up to 8.6.3, the RESTORE command does not properly validate serialized values. An authenticated attacker with permission to execute RESTORE can supply a crafted serialized payload that triggers invalid memory access and may lead to remote code execution. A workaround is to restrict access to the RESTORE command with ACL rules. This is patched in version 8.6.3.",
    "evidence": "osv:CVE-2026-25243",
    "products": [],
    "severity": "high",
    "structured": {
      "id": "CVE-2026-25243",
      "aliases": [
        "BIT-keydb-2026-25243",
        "BIT-redis-2026-25243",
        "BIT-valkey-2026-25243",
        "CVE-2026-25243",
        "GHSA-c8h9-259x-jff4"
      ],
      "metrics": [
        {
          "type": "CVSS_V4",
          "score": "CVSS:4.0/AV:N/AC:H/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/redis/redis",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "bd3b38d41070b478c58bc8b72d2af89cbccd1a40"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "fixed": "8.6.3"
                      }
                    ],
                    "source": "AFFECTED_FIELD",
                    "strategy": "StringRangeExpression"
                  },
                  {
                    "range": [
                      {
                        "fixed": "bd3b38d41070b478c58bc8b72d2af89cbccd1a40"
                      }
                    ],
                    "source": "REFERENCES_TAG",
                    "original_tag": "8.6.3"
                  },
                  {
                    "cpe": "cpe:2.3:a:redis:redis:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "fixed": "8.6.3"
                      }
                    ],
                    "source": "CPE_RANGE"
                  }
                ]
              }
            }
          ],
          "versions": [
            "8.6.2",
            "8.6.1",
            "8.6.0",
            "8.6-rc1",
            "8.4-int",
            "2.3-alpha0",
            "2.2.0-rc1",
            "2.2-alpha6",
            "2.2-alpha5",
            "2.2-alpha4",
            "2.2-alpha3",
            "2.2-alpha2",
            "2.2-alpha1",
            "2.2-alpha0",
            "v2.0.0-rc1",
            "v2.1.1-watch",
            "v1.3.11",
            "v1.3.10",
            "v1.3.9",
            "v1.3.8",
            "v1.3.7",
            "1.3.6",
            "vm-playpen"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-25243.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:42.440577576Z",
      "provider": "osv",
      "references": [
        "https://github.com/redis/redis/releases/tag/8.6.3",
        "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-25243.json",
        "https://access.redhat.com/errata/RHSA-2026:14316",
        "https://access.redhat.com/errata/RHSA-2026:23229",
        "https://access.redhat.com/errata/RHSA-2026:25216",
        "https://access.redhat.com/errata/RHSA-2026:25219",
        "https://access.redhat.com/errata/RHSA-2026:25925",
        "https://access.redhat.com/errata/RHSA-2026:26008",
        "https://access.redhat.com/errata/RHSA-2026:26233",
        "https://access.redhat.com/errata/RHSA-2026:26306",
        "https://access.redhat.com/errata/RHSA-2026:26540",
        "https://access.redhat.com/errata/RHSA-2026:27716",
        "https://access.redhat.com/errata/RHSA-2026:27787",
        "https://access.redhat.com/errata/RHSA-2026:28139",
        "https://access.redhat.com/errata/RHSA-2026:28142",
        "https://access.redhat.com/errata/RHSA-2026:29817",
        "https://access.redhat.com/errata/RHSA-2026:33427",
        "https://access.redhat.com/security/cve/CVE-2026-25243",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/25xxx/CVE-2026-25243.json",
        "https://github.com/redis/redis/security/advisories/GHSA-c8h9-259x-jff4",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-25243",
        "https://bugzilla.redhat.com/show_bug.cgi?id=2466828"
      ],
      "provider_metadata": {
        "cwe_ids": [
          "CWE-122"
        ],
        "cna_assigner": "GitHub_M",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/25xxx/CVE-2026-25243.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-25243",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 509955,
  "published_at": "2026-05-05T16:44:57.306+00:00"
}