{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-6051", "assignerOrgId": "9a959283-ebb5-44b6-b705-dcc2bbced522", "state": "PUBLISHED", "assignerShortName": "ibm", "dateReserved": "2026-04-09T21:45:54.618Z", "datePublished": "2026-05-27T13:07:47.761Z", "dateUpdated": "2026-05-27T14:41:58.407Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "9a959283-ebb5-44b6-b705-dcc2bbced522", "shortName": "ibm", "dateUpdated": "2026-05-27T13:07:47.761Z"}, "title": "IBM\u00ae Db2\u00ae is vulnerable to a denial of service when executing a specially crafted query with a small statement heap", "problemTypes": [{"descriptions": [{"lang": "en", "cweId": "CWE-400", "description": "CWE-400 Uncontrolled Resource Consumption", "type": "CWE"}]}], "affected": [{"vendor": "IBM", "product": "Db2", "versions": [{"status": "affected", "version": "11.5.0", "lessThanOrEqual": "11.5.9", "versionType": "semver"}, {"status": "affected", "version": "12.1.0", "lessThanOrEqual": "12.1.4", "versionType": "semver"}], "cpes": ["cpe:2.3:a:ibm:db2:11.5.0:*:*:*:*:*:*:*", "cpe:2.3:a:ibm:db2:11.5.9:*:*:*:*:*:*:*", "cpe:2.3:a:ibm:db2:12.1.0:*:*:*:*:*:*:*", "cpe:2.3:a:ibm:db2:12.1.4:*:*:*:*:*:*:*"]}], "descriptions": [{"lang": "en", "value": "IBM Db2 11.5.0 through 11.5.9, and 12.1.0 through 12.1.4 is vulnerable to a denial of service when executing a specially crafted query with a small statement heap.", "supportingMedia": [{"type": "text/html", "base64": false, "value": "<p>IBM Db2 11.5.0 through 11.5.9, and 12.1.0 through 12.1.4 is vulnerable to a denial of service when executing a specially crafted query with a small statement heap.</p>"}]}], "references": [{"url": "https://www.ibm.com/support/pages/node/7273558", "tags": ["vendor-advisory", "patch"]}], "metrics": [{"format": "CVSS", "scenarios": [{"lang": "en", "value": "GENERAL"}], "cvssV3_1": {"version": "3.1", "attackVector": "LOCAL", "attackComplexity": "LOW", "privilegesRequired": "LOW", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "availabilityImpact": "HIGH", "baseSeverity": "MEDIUM", "baseScore": 5.5, "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H"}}], "solutions": [{"lang": "en", "value": "Customers running any vulnerable affected level of an affected Program, V11.5, and V12.1, can download the special build containing the interim fix for this issue from Fix Central. These special builds are available based on the most recent level for each impacted release: V11.5.9, and V12.1.4. They can be applied to any affected level of the appropriate release to remediate this vulnerability.\n\n\n\n\n\nReleaseFixed in mod packAPARDownload URLV11.5TBD https://www.ibm.com/support/pages/node/7087189 \n\n\n\nV12.1\n\n\n\n\n\n\n\nTBD\n\n\n\n\n\n\n\n https://www.ibm.com/support/pages/node/7267513 \n\n\n\n\n\n\n\n\n\nIBM does not disclose key Db2 functionality nor replication steps for a vulnerability to avoid providing too much information to any potential malicious attacker. IBM does not want to enable a malicious attacker with sufficient knowledge to craft an exploit of the vulnerability.", "supportingMedia": [{"type": "text/html", "base64": false, "value": "<p>Customers running any vulnerable affected level of an affected Program, V11.5, and V12.1, can download the special build containing the interim fix for this issue from Fix Central. These special builds are available based on the most recent level for each impacted release: V11.5.9, and V12.1.4. They can be applied to any affected level of the appropriate release to remediate this vulnerability.</p><p></p><div><table><tbody><tr><td><strong>Release</strong></td><td><strong>Fixed in mod pack</strong></td><td><strong>APAR</strong></td><td><strong>Download URL</strong></td></tr><tr><td>V11.5</td><td>TBD</td><td><a href=\"https://www.ibm.com/mysupport/s/defect/aCIgJ000000BxZR/dt466547\" rel=\"nofollow\">DT466547</a></td><td><p>Special Build #81937 or later for V11.5.9 available at this link:<br><a href=\"https://www.ibm.com/support/pages/node/7087189\" rel=\"noopener noreferrer nofollow\">https://www.ibm.com/support/pages/node/7087189</a></p></td></tr><tr><td><p>V12.1</p><p></p></td><td><p>TBD</p><p></p></td><td><p><a href=\"https://www.ibm.com/mysupport/s/defect/aCIgJ000000BxZR/dt466547\" rel=\"nofollow\">DT466547</a></p><p></p></td><td><p>Special Build #83501 or later for V12.1.4 available at this link:<br><a href=\"https://www.ibm.com/support/pages/node/7267513\" rel=\"nofollow\">https://www.ibm.com/support/pages/node/7267513</a></p></td></tr></tbody></table></div><p></p><p>IBM does not disclose key Db2 functionality nor replication steps for a vulnerability to avoid providing too much information to any potential malicious attacker. IBM does not want to enable a malicious attacker with sufficient knowledge to craft an exploit of the vulnerability.</p>"}]}], "x_generator": {"engine": "ibm-cvegen"}, "workarounds": [{"lang": "en", "value": "1) Increase statement heap by setting larger STMTHEAP.\n\n\n\nor\n\n\n\n2) Reduce optimization level to 0. The user can append a optimizer guideline to the query:\n\n\n\n<query>\n\n\n\n/* <OPTGUIDELINES>\n\n\n\n\u00a0\u00a0<QRYOPT VALUE='0'/>\n\n\n\n</OPTGUIDELINES> */", "supportingMedia": [{"type": "text/html", "base64": false, "value": "<p>1) Increase statement heap by setting larger STMTHEAP.</p><p>or</p><p>2) Reduce optimization level to 0. The user can append a optimizer guideline to the query:</p><p>&lt;query&gt;</p><p>/* &lt;OPTGUIDELINES&gt;</p><p>\u00a0\u00a0&lt;QRYOPT VALUE='0'/&gt;</p><p>&lt;/OPTGUIDELINES&gt; */</p>"}]}]}, "adp": [{"metrics": [{"other": {"type": "ssvc", "content": {"timestamp": "2026-05-27T14:38:57.077391Z", "id": "CVE-2026-6051", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "role": "CISA Coordinator", "version": "2.0.3"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-05-27T14:41:58.407Z"}}]}}

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-6051", "assignerOrgId": "9a959283-ebb5-44b6-b705-dcc2bbced522", "state": "PUBLISHED", "assignerShortName": "ibm", "dateReserved": "2026-04-09T21:45:54.618Z", "datePublished": "2026-05-27T13:07:47.761Z", "dateUpdated": "2026-05-27T14:41:58.407Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "9a959283-ebb5-44b6-b705-dcc2bbced522", "shortName": "ibm", "dateUpdated": "2026-05-27T13:07:47.761Z"}, "title": "IBM\u00ae Db2\u00ae is vulnerable to a denial of service when executing a specially crafted query with a small statement heap", "problemTypes": [{"descriptions": [{"lang": "en", "cweId": "CWE-400", "description": "CWE-400 Uncontrolled Resource Consumption", "type": "CWE"}]}], "affected": [{"vendor": "IBM", "product": "Db2", "versions": [{"status": "affected", "version": "11.5.0", "lessThanOrEqual": "11.5.9", "versionType": "semver"}, {"status": "affected", "version": "12.1.0", "lessThanOrEqual": "12.1.4", "versionType": "semver"}], "cpes": ["cpe:2.3:a:ibm:db2:11.5.0:*:*:*:*:*:*:*", "cpe:2.3:a:ibm:db2:11.5.9:*:*:*:*:*:*:*", "cpe:2.3:a:ibm:db2:12.1.0:*:*:*:*:*:*:*", "cpe:2.3:a:ibm:db2:12.1.4:*:*:*:*:*:*:*"]}], "descriptions": [{"lang": "en", "value": "IBM Db2 11.5.0 through 11.5.9, and 12.1.0 through 12.1.4 is vulnerable to a denial of service when executing a specially crafted query with a small statement heap.", "supportingMedia": [{"type": "text/html", "base64": false, "value": "<p>IBM Db2 11.5.0 through 11.5.9, and 12.1.0 through 12.1.4 is vulnerable to a denial of service when executing a specially crafted query with a small statement heap.</p>"}]}], "references": [{"url": "https://www.ibm.com/support/pages/node/7273558", "tags": ["vendor-advisory", "patch"]}], "metrics": [{"format": "CVSS", "scenarios": [{"lang": "en", "value": "GENERAL"}], "cvssV3_1": {"version": "3.1", "attackVector": "LOCAL", "attackComplexity": "LOW", "privilegesRequired": "LOW", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "availabilityImpact": "HIGH", "baseSeverity": "MEDIUM", "baseScore": 5.5, "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H"}}], "solutions": [{"lang": "en", "value": "Customers running any vulnerable affected level of an affected Program, V11.5, and V12.1, can download the special build containing the interim fix for this issue from Fix Central. These special builds are available based on the most recent level for each impacted release: V11.5.9, and V12.1.4. They can be applied to any affected level of the appropriate release to remediate this vulnerability.\n\n\n\n\n\nReleaseFixed in mod packAPARDownload URLV11.5TBD https://www.ibm.com/support/pages/node/7087189 \n\n\n\nV12.1\n\n\n\n\n\n\n\nTBD\n\n\n\n\n\n\n\n https://www.ibm.com/support/pages/node/7267513 \n\n\n\n\n\n\n\n\n\nIBM does not disclose key Db2 functionality nor replication steps for a vulnerability to avoid providing too much information to any potential malicious attacker. IBM does not want to enable a malicious attacker with sufficient knowledge to craft an exploit of the vulnerability.", "supportingMedia": [{"type": "text/html", "base64": false, "value": "<p>Customers running any vulnerable affected level of an affected Program, V11.5, and V12.1, can download the special build containing the interim fix for this issue from Fix Central. These special builds are available based on the most recent level for each impacted release: V11.5.9, and V12.1.4. They can be applied to any affected level of the appropriate release to remediate this vulnerability.</p><p></p><div><table><tbody><tr><td><strong>Release</strong></td><td><strong>Fixed in mod pack</strong></td><td><strong>APAR</strong></td><td><strong>Download URL</strong></td></tr><tr><td>V11.5</td><td>TBD</td><td><a href=\"https://www.ibm.com/mysupport/s/defect/aCIgJ000000BxZR/dt466547\" rel=\"nofollow\">DT466547</a></td><td><p>Special Build #81937 or later for V11.5.9 available at this link:<br><a href=\"https://www.ibm.com/support/pages/node/7087189\" rel=\"noopener noreferrer nofollow\">https://www.ibm.com/support/pages/node/7087189</a></p></td></tr><tr><td><p>V12.1</p><p></p></td><td><p>TBD</p><p></p></td><td><p><a href=\"https://www.ibm.com/mysupport/s/defect/aCIgJ000000BxZR/dt466547\" rel=\"nofollow\">DT466547</a></p><p></p></td><td><p>Special Build #83501 or later for V12.1.4 available at this link:<br><a href=\"https://www.ibm.com/support/pages/node/7267513\" rel=\"nofollow\">https://www.ibm.com/support/pages/node/7267513</a></p></td></tr></tbody></table></div><p></p><p>IBM does not disclose key Db2 functionality nor replication steps for a vulnerability to avoid providing too much information to any potential malicious attacker. IBM does not want to enable a malicious attacker with sufficient knowledge to craft an exploit of the vulnerability.</p>"}]}], "x_generator": {"engine": "ibm-cvegen"}, "workarounds": [{"lang": "en", "value": "1) Increase statement heap by setting larger STMTHEAP.\n\n\n\nor\n\n\n\n2) Reduce optimization level to 0. The user can append a optimizer guideline to the query:\n\n\n\n<query>\n\n\n\n/* <OPTGUIDELINES>\n\n\n\n\u00a0\u00a0<QRYOPT VALUE='0'/>\n\n\n\n</OPTGUIDELINES> */", "supportingMedia": [{"type": "text/html", "base64": false, "value": "<p>1) Increase statement heap by setting larger STMTHEAP.</p><p>or</p><p>2) Reduce optimization level to 0. The user can append a optimizer guideline to the query:</p><p>&lt;query&gt;</p><p>/* &lt;OPTGUIDELINES&gt;</p><p>\u00a0\u00a0&lt;QRYOPT VALUE='0'/&gt;</p><p>&lt;/OPTGUIDELINES&gt; */</p>"}]}]}, "adp": [{"title": "CISA ADP Vulnrichment", "metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2026-6051", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "version": "2.0.3", "timestamp": "2026-05-27T14:38:57.077391Z"}}}], "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-05-27T14:41:53.795Z"}}]}}

{"cveTags": [], "descriptions": [{"lang": "en", "value": "IBM Db2 11.5.0 through 11.5.9, and 12.1.0 through 12.1.4 is vulnerable to a denial of service when executing a specially crafted query with a small statement heap."}], "id": "CVE-2026-6051", "lastModified": "2026-05-27T14:53:51.833", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 5.5, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 1.8, "impactScore": 3.6, "source": "psirt@us.ibm.com", "type": "Primary"}]}, "published": "2026-05-27T14:17:34.370", "references": [{"source": "psirt@us.ibm.com", "url": "https://www.ibm.com/support/pages/node/7273558"}], "sourceIdentifier": "psirt@us.ibm.com", "vulnStatus": "Awaiting Analysis", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-400"}], "source": "psirt@us.ibm.com", "type": "Primary"}]}

{}

{}