CVE-2025-49844 (GCVE-0-2025-49844)

Vulnerability from cvelistv5 – Published: 2025-10-03 19:27 – Updated: 2026-03-20 14:08
VLAI KEVintel KEV
Title
Redis Lua Use-After-Free may lead to remote code execution
Summary
Redis is an open source, in-memory database that persists on disk. Versions 8.2.1 and below allow an authenticated user to use a specially crafted Lua script to manipulate the garbage collector, trigger a use-after-free and potentially lead to remote code execution. The problem exists in all versions of Redis with Lua scripting. This issue is fixed in version 8.2.2. To workaround this issue without patching the redis-server executable is to prevent users from executing Lua scripts. This can be done using ACL to restrict EVAL and EVALSHA commands.
Severity
10 (Critical)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
SSVC
Exploitation: poc Automatable: no Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
Assigner
References
Impacted products
Vendor Product Version
redis redis Affected: < 8.2.2
Create a notification for this product.
KEVintel KEV
Known Exploited Vulnerability - GCVE BCP-07 Compliant
KEV entry ID: bff5990c-0569-4a35-8fb7-6862cae52da3

Vulnerability ID: CVE-2025-49844

Status: Confirmed

Status Updated: 2025-10-15 14:56 UTC

Exploited: Yes

Timestamps
First Seen: 2025-10-15
Asserted: 2025-10-15
Scope
Notes: KEVIntel entry: Redis Lua Use-After-Free may lead to remote code execution | Affected: redis / redis | CVSS: 10.0 (CRITICAL) | Used in malware: unknown | Not yet in CISA KEV: True
Evidence

Type: Public Report

Signal: Successful Exploitation

Confidence: 70%

Source: kevintel

Details
Feed KEVIntel (kevintel.com)
Title Redis Lua Use-After-Free may lead to remote code execution
Vendor redis
Product redis
Added Date 2025-10-15T14:56:30.000Z
Cvss Score 10.0
Epss Score None
Cvss Severity CRITICAL
Epss Percentile None
Used In Malware unknown
Ahead Of Cisa Kev None
Not Yet In Cisa Kev True
References
Created: 2026-06-19 12:45 UTC | Updated: 2026-06-19 12:45 UTC
Show details on NVD website
To clipboard 

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2025-49844",
                "options": [
                  {
                    "Exploitation": "poc"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "total"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-03-20T03:55:40.030296Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-03-20T14:08:37.823Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "references": [
          {
            "tags": [
              "exploit"
            ],
            "url": "https://github.com/lastvocher/redis-CVE-2025-49844"
          }
        ],
        "title": "CISA ADP Vulnrichment"
      },
      {
        "providerMetadata": {
          "dateUpdated": "2025-11-04T21:11:33.153Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "url": "http://www.openwall.com/lists/oss-security/2025/10/07/2"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "redis",
          "vendor": "redis",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c 8.2.2"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "Redis is an open source, in-memory database that persists on disk. Versions 8.2.1 and below allow an authenticated user to use a specially crafted Lua script to manipulate the garbage collector, trigger a use-after-free and potentially lead to remote code execution. The problem exists in all versions of Redis with Lua scripting. This issue is fixed in version 8.2.2. To workaround this issue without patching the redis-server executable is to prevent users from executing Lua scripts. This can be done using ACL to restrict EVAL and EVALSHA commands."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 10,
            "baseSeverity": "CRITICAL",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "LOW",
            "scope": "CHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H",
            "version": "3.1"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-416",
              "description": "CWE-416: Use After Free",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2025-10-03T19:27:23.609Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
      "references": [
        {
          "name": "https://github.com/redis/redis/security/advisories/GHSA-4789-qfc9-5f9q",
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://github.com/redis/redis/security/advisories/GHSA-4789-qfc9-5f9q"
        },
        {
          "name": "https://github.com/redis/redis/commit/d5728cb5795c966c5b5b1e0f0ac576a7e69af539",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/redis/redis/commit/d5728cb5795c966c5b5b1e0f0ac576a7e69af539"
        },
        {
          "name": "https://github.com/redis/redis/releases/tag/8.2.2",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/redis/redis/releases/tag/8.2.2"
        }
      ],
      "source": {
        "advisory": "GHSA-4789-qfc9-5f9q",
        "discovery": "UNKNOWN"
      },
      "title": "Redis Lua Use-After-Free may lead to remote code execution"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2025-49844",
    "datePublished": "2025-10-03T19:27:23.609Z",
    "dateReserved": "2025-06-11T14:33:57.800Z",
    "dateUpdated": "2026-03-20T14:08:37.823Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2025-49844",
      "date": "2026-06-20",
      "epss": "0.86268",
      "percentile": "0.99707"
    },
    "nvd": "{\"cve\":{\"id\":\"CVE-2025-49844\",\"sourceIdentifier\":\"security-advisories@github.com\",\"published\":\"2025-10-03T20:15:32.823\",\"lastModified\":\"2026-03-20T14:16:14.130\",\"vulnStatus\":\"Modified\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"Redis is an open source, in-memory database that persists on disk. Versions 8.2.1 and below allow an authenticated user to use a specially crafted Lua script to manipulate the garbage collector, trigger a use-after-free and potentially lead to remote code execution. The problem exists in all versions of Redis with Lua scripting. This issue is fixed in version 8.2.2. To workaround this issue without patching the redis-server executable is to prevent users from executing Lua scripts. This can be done using ACL to restrict EVAL and EVALSHA commands.\"}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"security-advisories@github.com\",\"type\":\"Secondary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H\",\"baseScore\":9.9,\"baseSeverity\":\"CRITICAL\",\"attackVector\":\"NETWORK\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"scope\":\"CHANGED\",\"confidentialityImpact\":\"HIGH\",\"integrityImpact\":\"HIGH\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":3.1,\"impactScore\":6.0},{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H\",\"baseScore\":9.9,\"baseSeverity\":\"CRITICAL\",\"attackVector\":\"NETWORK\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"scope\":\"CHANGED\",\"confidentialityImpact\":\"HIGH\",\"integrityImpact\":\"HIGH\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":3.1,\"impactScore\":6.0}]},\"weaknesses\":[{\"source\":\"security-advisories@github.com\",\"type\":\"Secondary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-416\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:redis:redis:*:*:*:*:*:*:*:*\",\"versionEndExcluding\":\"6.2.20\",\"matchCriteriaId\":\"C2F4D4F6-6F7C-46BC-B37C-DFAC34B097AC\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:redis:redis:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"7.0\",\"versionEndExcluding\":\"7.2.11\",\"matchCriteriaId\":\"4F82BD2A-473F-4F3F-9C80-C6448D07C45D\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:redis:redis:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"7.4.0\",\"versionEndExcluding\":\"7.4.6\",\"matchCriteriaId\":\"F6E336B8-E000-4EFA-95F8-F2B74A4913F0\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:redis:redis:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"8.0.0\",\"versionEndExcluding\":\"8.0.4\",\"matchCriteriaId\":\"459EBC07-D37A-44E5-95DB-4C3FD9F008FF\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:redis:redis:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"8.2.0\",\"versionEndExcluding\":\"8.2.2\",\"matchCriteriaId\":\"CBF13EC1-FE0A-4242-B8D3-2681485DDDF2\"}]}]},{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:lfprojects:valkey:*:*:*:*:*:*:*:*\",\"versionEndExcluding\":\"7.2.11\",\"matchCriteriaId\":\"8CAF97D0-BE35-43AE-B820-3A88D1F49050\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:lfprojects:valkey:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"8.0.0\",\"versionEndExcluding\":\"8.0.6\",\"matchCriteriaId\":\"F0285AE3-BBEA-4D0E-A8AD-957EC3E78870\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:lfprojects:valkey:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"8.1.0\",\"versionEndExcluding\":\"8.1.4\",\"matchCriteriaId\":\"725746C6-025D-4364-9D97-E1315D670DF6\"}]}]}],\"references\":[{\"url\":\"https://github.com/redis/redis/commit/d5728cb5795c966c5b5b1e0f0ac576a7e69af539\",\"source\":\"security-advisories@github.com\",\"tags\":[\"Patch\"]},{\"url\":\"https://github.com/redis/redis/releases/tag/8.2.2\",\"source\":\"security-advisories@github.com\",\"tags\":[\"Release Notes\"]},{\"url\":\"https://github.com/redis/redis/security/advisories/GHSA-4789-qfc9-5f9q\",\"source\":\"security-advisories@github.com\",\"tags\":[\"Third Party Advisory\"]},{\"url\":\"http://www.openwall.com/lists/oss-security/2025/10/07/2\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Mailing List\",\"Third Party Advisory\"]},{\"url\":\"https://github.com/lastvocher/redis-CVE-2025-49844\",\"source\":\"134c704f-9b21-4f2e-91b3-4a467353bcc0\"}]}}",
    "vulnrichment": {
      "containers": "{\"adp\": [{\"title\": \"CVE Program Container\", \"references\": [{\"url\": \"http://www.openwall.com/lists/oss-security/2025/10/07/2\"}], \"providerMetadata\": {\"orgId\": \"af854a3a-2127-422b-91ae-364da2661108\", \"shortName\": \"CVE\", \"dateUpdated\": \"2025-11-04T21:11:33.153Z\"}}, {\"title\": \"CISA ADP Vulnrichment\", \"metrics\": [{\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2025-49844\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"poc\"}, {\"Automatable\": \"no\"}, {\"Technical Impact\": \"total\"}], \"version\": \"2.0.3\", \"timestamp\": \"2026-03-20T03:55:40.030296Z\"}}}], \"references\": [{\"url\": \"https://github.com/lastvocher/redis-CVE-2025-49844\", \"tags\": [\"exploit\"]}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2025-10-03T19:46:39.985Z\"}}], \"cna\": {\"title\": \"Redis Lua Use-After-Free may lead to remote code execution\", \"source\": {\"advisory\": \"GHSA-4789-qfc9-5f9q\", \"discovery\": \"UNKNOWN\"}, \"metrics\": [{\"cvssV3_1\": {\"scope\": \"CHANGED\", \"version\": \"3.1\", \"baseScore\": 10, \"attackVector\": \"NETWORK\", \"baseSeverity\": \"CRITICAL\", \"vectorString\": \"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H\", \"integrityImpact\": \"HIGH\", \"userInteraction\": \"NONE\", \"attackComplexity\": \"LOW\", \"availabilityImpact\": \"HIGH\", \"privilegesRequired\": \"LOW\", \"confidentialityImpact\": \"HIGH\"}}], \"affected\": [{\"vendor\": \"redis\", \"product\": \"redis\", \"versions\": [{\"status\": \"affected\", \"version\": \"\u003c 8.2.2\"}]}], \"references\": [{\"url\": \"https://github.com/redis/redis/security/advisories/GHSA-4789-qfc9-5f9q\", \"name\": \"https://github.com/redis/redis/security/advisories/GHSA-4789-qfc9-5f9q\", \"tags\": [\"x_refsource_CONFIRM\"]}, {\"url\": \"https://github.com/redis/redis/commit/d5728cb5795c966c5b5b1e0f0ac576a7e69af539\", \"name\": \"https://github.com/redis/redis/commit/d5728cb5795c966c5b5b1e0f0ac576a7e69af539\", \"tags\": [\"x_refsource_MISC\"]}, {\"url\": \"https://github.com/redis/redis/releases/tag/8.2.2\", \"name\": \"https://github.com/redis/redis/releases/tag/8.2.2\", \"tags\": [\"x_refsource_MISC\"]}], \"descriptions\": [{\"lang\": \"en\", \"value\": \"Redis is an open source, in-memory database that persists on disk. Versions 8.2.1 and below allow an authenticated user to use a specially crafted Lua script to manipulate the garbage collector, trigger a use-after-free and potentially lead to remote code execution. The problem exists in all versions of Redis with Lua scripting. This issue is fixed in version 8.2.2. To workaround this issue without patching the redis-server executable is to prevent users from executing Lua scripts. This can be done using ACL to restrict EVAL and EVALSHA commands.\"}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en\", \"type\": \"CWE\", \"cweId\": \"CWE-416\", \"description\": \"CWE-416: Use After Free\"}]}], \"providerMetadata\": {\"orgId\": \"a0819718-46f1-4df5-94e2-005712e83aaa\", \"shortName\": \"GitHub_M\", \"dateUpdated\": \"2025-10-03T19:27:23.609Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2025-49844\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2026-03-20T14:08:37.823Z\", \"dateReserved\": \"2025-06-11T14:33:57.800Z\", \"assignerOrgId\": \"a0819718-46f1-4df5-94e2-005712e83aaa\", \"datePublished\": \"2025-10-03T19:27:23.609Z\", \"assignerShortName\": \"GitHub_M\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}


Log in or create an account to share your comment.




Tags
Taxonomy of the tags.





Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.