CVE-2026-81934 (GCVE-0-2026-81934)
Vulnerability from cvelistv5
Published
2026-08-27 19:40
Modified
2026-08-28 15:14
CWE
Summary
Redis contains a use-after-free vulnerability in the 'tlsProcessPendingData()' function, which handles the TLS pending-data list if Redis is configured with TLS support. A remote, unauthenticated attacker may be able to execute arbitrary commands with the privileges of the Redis server. Fixed in Redis 8.2.9, 8.4.6, 8.6.6, 8.8.2, and 8.10.1.
Impacted products
Vendor Product Version
Redis Redis Version: 8.8.0
Create a notification for this product.
Show details on NVD website


{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-81934",
                "options": [
                  {
                    "Exploitation": "poc"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "total"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-08-28T15:13:56.058373Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-08-28T15:14:13.092Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unknown",
          "product": "Redis",
          "vendor": "Redis",
          "versions": [
            {
              "status": "affected",
              "version": "8.8.0"
            },
            {
              "status": "unaffected",
              "version": "8.2.9"
            },
            {
              "status": "unaffected",
              "version": "8.4.6"
            },
            {
              "status": "unaffected",
              "version": "8.6.6"
            },
            {
              "status": "unaffected",
              "version": "8.8.2"
            },
            {
              "status": "unaffected",
              "version": "8.10.1"
            }
          ]
        }
      ],
      "datePublic": "2026-08-17T00:00:00.000Z",
      "descriptions": [
        {
          "lang": "en",
          "value": "Redis contains a use-after-free vulnerability in the \u0027tlsProcessPendingData()\u0027 function, which handles the TLS pending-data list if Redis is configured with TLS support. A remote, unauthenticated attacker may be able to execute arbitrary commands with the privileges of the Redis server. Fixed in Redis 8.2.9, 8.4.6, 8.6.6, 8.8.2, and 8.10.1."
        }
      ],
      "metrics": [
        {
          "cvssV4_0": {
            "attackComplexity": "LOW",
            "attackRequirements": "PRESENT",
            "attackVector": "NETWORK",
            "baseScore": 9.2,
            "baseSeverity": "CRITICAL",
            "privilegesRequired": "NONE",
            "subAvailabilityImpact": "NONE",
            "subConfidentialityImpact": "NONE",
            "subIntegrityImpact": "NONE",
            "userInteraction": "NONE",
            "vectorString": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N",
            "version": "4.0",
            "vulnAvailabilityImpact": "HIGH",
            "vulnConfidentialityImpact": "HIGH",
            "vulnIntegrityImpact": "HIGH"
          }
        },
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 9.8,
            "baseSeverity": "CRITICAL",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
          }
        },
        {
          "other": {
            "content": {
              "id": "CVE-2026-81934",
              "options": [
                {
                  "Exploitation": "poc"
                },
                {
                  "Automatable": "no"
                },
                {
                  "Technical Impact": "total"
                }
              ],
              "role": "CISA Coordinator",
              "timestamp": "2026-08-27T19:12:51.964039Z",
              "version": "2.0.3"
            },
            "type": "ssvc"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-416",
              "description": "CWE-416 Use After Free",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-08-27T19:40:15.141Z",
        "orgId": "9119a7d8-5eab-497f-8521-727c672e3725",
        "shortName": "cisa-cg"
      },
      "references": [
        {
          "name": "url",
          "tags": [
            "patch"
          ],
          "url": "https://github.com/redis/redis/commit/6d088c335d5c3ec49a6c28486140b498e70b7834"
        },
        {
          "name": "url",
          "tags": [
            "exploit"
          ],
          "url": "https://github.com/v12-security/pocs/tree/main/redis/server_ssl"
        },
        {
          "name": "url",
          "tags": [
            "release-notes"
          ],
          "url": "https://raw.githubusercontent.com/redis/redis/8.2/00-RELEASENOTES"
        },
        {
          "name": "url",
          "tags": [
            "release-notes"
          ],
          "url": "https://raw.githubusercontent.com/redis/redis/8.4/00-RELEASENOTES"
        },
        {
          "name": "url",
          "tags": [
            "release-notes"
          ],
          "url": "https://raw.githubusercontent.com/redis/redis/8.6/00-RELEASENOTES"
        },
        {
          "name": "url",
          "tags": [
            "release-notes"
          ],
          "url": "https://raw.githubusercontent.com/redis/redis/8.8/00-RELEASENOTES"
        },
        {
          "name": "url",
          "tags": [
            "release-notes"
          ],
          "url": "https://raw.githubusercontent.com/redis/redis/8.10/00-RELEASENOTES"
        }
      ],
      "title": "Redis TLS pending-data list use-after-free"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "9119a7d8-5eab-497f-8521-727c672e3725",
    "assignerShortName": "cisa-cg",
    "cveId": "CVE-2026-81934",
    "datePublished": "2026-08-27T19:40:15.141Z",
    "dateReserved": "2026-08-27T19:15:11.715Z",
    "dateUpdated": "2026-08-28T15:14:13.092Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "vulnrichment": {
      "containers": "{\"cna\": {\"title\": \"Redis TLS pending-data list use-after-free\", \"metrics\": [{\"cvssV4_0\": {\"version\": \"4.0\", \"baseScore\": 9.2, \"attackVector\": \"NETWORK\", \"baseSeverity\": \"CRITICAL\", \"vectorString\": \"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N\", \"userInteraction\": \"NONE\", \"attackComplexity\": \"LOW\", \"attackRequirements\": \"PRESENT\", \"privilegesRequired\": \"NONE\", \"subIntegrityImpact\": \"NONE\", \"vulnIntegrityImpact\": \"HIGH\", \"subAvailabilityImpact\": \"NONE\", \"vulnAvailabilityImpact\": \"HIGH\", \"subConfidentialityImpact\": \"NONE\", \"vulnConfidentialityImpact\": \"HIGH\"}}, {\"cvssV3_1\": {\"scope\": \"UNCHANGED\", \"version\": \"3.1\", \"baseScore\": 9.8, \"attackVector\": \"NETWORK\", \"baseSeverity\": \"CRITICAL\", \"vectorString\": \"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H\", \"integrityImpact\": \"HIGH\", \"userInteraction\": \"NONE\", \"attackComplexity\": \"LOW\", \"availabilityImpact\": \"HIGH\", \"privilegesRequired\": \"NONE\", \"confidentialityImpact\": \"HIGH\"}}, {\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2026-81934\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"poc\"}, {\"Automatable\": \"no\"}, {\"Technical Impact\": \"total\"}], \"version\": \"2.0.3\", \"timestamp\": \"2026-08-27T19:12:51.964039Z\"}}}], \"affected\": [{\"vendor\": \"Redis\", \"product\": \"Redis\", \"versions\": [{\"status\": \"affected\", \"version\": \"8.8.0\"}, {\"status\": \"unaffected\", \"version\": \"8.2.9\"}, {\"status\": \"unaffected\", \"version\": \"8.4.6\"}, {\"status\": \"unaffected\", \"version\": \"8.6.6\"}, {\"status\": \"unaffected\", \"version\": \"8.8.2\"}, {\"status\": \"unaffected\", \"version\": \"8.10.1\"}], \"defaultStatus\": \"unknown\"}], \"datePublic\": \"2026-08-17T00:00:00.000Z\", \"references\": [{\"url\": \"https://github.com/redis/redis/commit/6d088c335d5c3ec49a6c28486140b498e70b7834\", \"name\": \"url\", \"tags\": [\"patch\"]}, {\"url\": \"https://github.com/v12-security/pocs/tree/main/redis/server_ssl\", \"name\": \"url\", \"tags\": [\"exploit\"]}, {\"url\": \"https://raw.githubusercontent.com/redis/redis/8.2/00-RELEASENOTES\", \"name\": \"url\", \"tags\": [\"release-notes\"]}, {\"url\": \"https://raw.githubusercontent.com/redis/redis/8.4/00-RELEASENOTES\", \"name\": \"url\", \"tags\": [\"release-notes\"]}, {\"url\": \"https://raw.githubusercontent.com/redis/redis/8.6/00-RELEASENOTES\", \"name\": \"url\", \"tags\": [\"release-notes\"]}, {\"url\": \"https://raw.githubusercontent.com/redis/redis/8.8/00-RELEASENOTES\", \"name\": \"url\", \"tags\": [\"release-notes\"]}, {\"url\": \"https://raw.githubusercontent.com/redis/redis/8.10/00-RELEASENOTES\", \"name\": \"url\", \"tags\": [\"release-notes\"]}], \"descriptions\": [{\"lang\": \"en\", \"value\": \"Redis contains a use-after-free vulnerability in the \u0027tlsProcessPendingData()\u0027 function, which handles the TLS pending-data list if Redis is configured with TLS support. A remote, unauthenticated attacker may be able to execute arbitrary commands with the privileges of the Redis server. Fixed in Redis 8.2.9, 8.4.6, 8.6.6, 8.8.2, and 8.10.1.\"}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en\", \"type\": \"CWE\", \"cweId\": \"CWE-416\", \"description\": \"CWE-416 Use After Free\"}]}], \"providerMetadata\": {\"orgId\": \"9119a7d8-5eab-497f-8521-727c672e3725\", \"shortName\": \"cisa-cg\", \"dateUpdated\": \"2026-08-27T19:40:15.141Z\"}}, \"adp\": [{\"title\": \"CISA ADP Vulnrichment\", \"metrics\": [{\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2026-81934\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"poc\"}, {\"Automatable\": \"no\"}, {\"Technical Impact\": \"total\"}], \"version\": \"2.0.3\", \"timestamp\": \"2026-08-28T15:13:56.058373Z\"}}}], \"providerMetadata\": {\"shortName\": \"CISA-ADP\", \"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"dateUpdated\": \"2026-08-28T15:14:03.738Z\"}}]}",
      "cveMetadata": "{\"cveId\": \"CVE-2026-81934\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2026-08-27T19:40:15.141Z\", \"dateReserved\": \"2026-08-27T19:15:11.715Z\", \"assignerOrgId\": \"9119a7d8-5eab-497f-8521-727c672e3725\", \"datePublished\": \"2026-08-27T19:40:15.141Z\", \"assignerShortName\": \"cisa-cg\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}


Log in or create an account to share your comment.




Tags
Taxonomy of the tags.


Loading…

Loading…

Loading…

Sightings

Author Source Type Date

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
  • Confirmed: The vulnerability is confirmed from an analyst perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
  • Patched: This vulnerability was successfully patched by the user reporting the sighting.
  • Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
  • Not confirmed: The user expresses doubt about the veracity of the vulnerability.
  • Not patched: This vulnerability was not successfully patched by the user reporting the sighting.


Loading…

Loading…