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CNVD-2026-31546

Vulnerability from cnvd - Published: 2026-08-11

Title

IBM Db2 db2flacc缓冲区溢出漏洞

Description

IBM Db2是一款关系型数据库管理系统，提供数据存储、查询和管理功能，支持企业级应用。 IBM Db2存在缓冲区溢出漏洞。该漏洞源于setgid辅助程序db2flacc未能正确处理特定输入，导致缓冲区边界检查不足，攻击者可利用该漏洞通过精心构造的数据触发内存破坏。

Severity

高

Patch Name

IBM Db2 db2flacc缓冲区溢出漏洞的补丁

Patch Description

IBM Db2是一款关系型数据库管理系统，提供数据存储、查询和管理功能，支持企业级应用。 IBM Db2存在缓冲区溢出漏洞。该漏洞源于setgid辅助程序db2flacc未能正确处理特定输入，导致缓冲区边界检查不足，攻击者可利用该漏洞通过精心构造的数据触发内存破坏。目前，供应商发布了安全公告及相关补丁信息，修复了此漏洞。

Formal description

厂商已发布了漏洞修复程序，请及时关注更新： https://www.ibm.com/support/pages/node/7279466

Reference

https://nvd.nist.gov/vuln/detail/CVE-2026-10535

Impacted products

Name
['IBM DB2 >=11.5.0，<=11.5.9', 'IBM DB2 >=12.1.0，<=12.1.4']

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JSON

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{
  "cves": {
    "cve": {
      "cveNumber": "CVE-2026-10535",
      "cveUrl": "https://nvd.nist.gov/vuln/detail/CVE-2026-10535"
    }
  },
  "description": "IBM Db2\u662f\u4e00\u6b3e\u5173\u7cfb\u578b\u6570\u636e\u5e93\u7ba1\u7406\u7cfb\u7edf\uff0c\u63d0\u4f9b\u6570\u636e\u5b58\u50a8\u3001\u67e5\u8be2\u548c\u7ba1\u7406\u529f\u80fd\uff0c\u652f\u6301\u4f01\u4e1a\u7ea7\u5e94\u7528\u3002\n\nIBM Db2\u5b58\u5728\u7f13\u51b2\u533a\u6ea2\u51fa\u6f0f\u6d1e\u3002\u8be5\u6f0f\u6d1e\u6e90\u4e8esetgid\u8f85\u52a9\u7a0b\u5e8fdb2flacc\u672a\u80fd\u6b63\u786e\u5904\u7406\u7279\u5b9a\u8f93\u5165\uff0c\u5bfc\u81f4\u7f13\u51b2\u533a\u8fb9\u754c\u68c0\u67e5\u4e0d\u8db3\uff0c\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u901a\u8fc7\u7cbe\u5fc3\u6784\u9020\u7684\u6570\u636e\u89e6\u53d1\u5185\u5b58\u7834\u574f\u3002",
  "formalWay": "\u5382\u5546\u5df2\u53d1\u5e03\u4e86\u6f0f\u6d1e\u4fee\u590d\u7a0b\u5e8f\uff0c\u8bf7\u53ca\u65f6\u5173\u6ce8\u66f4\u65b0\uff1a\r\nhttps://www.ibm.com/support/pages/node/7279466",
  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2026-31546",
  "openTime": "2026-08-11",
  "patchDescription": "IBM Db2\u662f\u4e00\u6b3e\u5173\u7cfb\u578b\u6570\u636e\u5e93\u7ba1\u7406\u7cfb\u7edf\uff0c\u63d0\u4f9b\u6570\u636e\u5b58\u50a8\u3001\u67e5\u8be2\u548c\u7ba1\u7406\u529f\u80fd\uff0c\u652f\u6301\u4f01\u4e1a\u7ea7\u5e94\u7528\u3002\r\n\r\nIBM Db2\u5b58\u5728\u7f13\u51b2\u533a\u6ea2\u51fa\u6f0f\u6d1e\u3002\u8be5\u6f0f\u6d1e\u6e90\u4e8esetgid\u8f85\u52a9\u7a0b\u5e8fdb2flacc\u672a\u80fd\u6b63\u786e\u5904\u7406\u7279\u5b9a\u8f93\u5165\uff0c\u5bfc\u81f4\u7f13\u51b2\u533a\u8fb9\u754c\u68c0\u67e5\u4e0d\u8db3\uff0c\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u901a\u8fc7\u7cbe\u5fc3\u6784\u9020\u7684\u6570\u636e\u89e6\u53d1\u5185\u5b58\u7834\u574f\u3002\u76ee\u524d\uff0c\u4f9b\u5e94\u5546\u53d1\u5e03\u4e86\u5b89\u5168\u516c\u544a\u53ca\u76f8\u5173\u8865\u4e01\u4fe1\u606f\uff0c\u4fee\u590d\u4e86\u6b64\u6f0f\u6d1e\u3002",
  "patchName": "IBM Db2 db2flacc\u7f13\u51b2\u533a\u6ea2\u51fa\u6f0f\u6d1e\u7684\u8865\u4e01",
  "products": {
    "product": [
      "IBM DB2 \u003e=11.5.0\uff0c\u003c=11.5.9",
      "IBM DB2 \u003e=12.1.0\uff0c\u003c=12.1.4"
    ]
  },
  "referenceLink": "https://nvd.nist.gov/vuln/detail/CVE-2026-10535",
  "serverity": "\u9ad8",
  "submitTime": "2026-07-31",
  "title": "IBM Db2 db2flacc\u7f13\u51b2\u533a\u6ea2\u51fa\u6f0f\u6d1e"
}

CVE-2026-10535 (GCVE-0-2026-10535)

Vulnerability from cvelistv5 – Published: 2026-07-30 16:55 – Updated: 2026-07-31 03:56

Title

IBM® Db2® is vulnerable to buffer overflow in setgid helper db2flacc which can lead to privilege escalation and instance compromise from an unprivileged shell

Summary

IBM Db2 11.5.0 through 11.5.9, and 12.1.0 through 12.1.4 is vulnerable to buffer overflow in setgid helper db2flacc.

Severity

8.4 (High)


                        
                          CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

SSVC

Exploitation: none Automatable: no Technical Impact: total

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-07-30 00:00 UTC

CWE

CWE-121 - Stack-based Buffer Overflow

Assigner

ibm mitre root

References

1 reference

URL	Tags
https://www.ibm.com/support/pages/node/7279466	vendor-advisorypatch

Impacted products

1 product

Vendor	Product	Version
IBM	Db2	Affected: 11.5.0 , ≤ 11.5.9 (semver) Affected: 12.1.0 , ≤ 12.1.4 (semver) 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:::::::*

Show details on NVD website

JSON

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        "metrics": [
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                "id": "CVE-2026-10535",
                "options": [
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                    "Exploitation": "none"
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                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "total"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-07-30T00:00:00+00:00",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-07-31T03:56:17.992Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "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:*:*:*:*:*:*:*"
          ],
          "product": "Db2",
          "vendor": "IBM",
          "versions": [
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              "status": "affected",
              "version": "11.5.0",
              "versionType": "semver"
            },
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              "status": "affected",
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              "type": "text/html",
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          ],
          "value": "IBM Db2 11.5.0 through 11.5.9, and 12.1.0 through 12.1.4 is vulnerable to buffer overflow in setgid helper db2flacc."
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      "metrics": [
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          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "LOCAL",
            "availabilityImpact": "HIGH",
            "baseScore": 8.4,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
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        "orgId": "9a959283-ebb5-44b6-b705-dcc2bbced522",
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          "url": "https://www.ibm.com/support/pages/node/7279466"
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      "solutions": [
        {
          "lang": "en",
          "supportingMedia": [
            {
              "base64": false,
              "type": "text/html",
              "value": "\u003cp\u003eCustomers running any vulnerable modpack 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.\u003c/p\u003e\u003cp\u003e\u003c/p\u003e\u003cdiv\u003e\u003ctable\u003e\u003ctbody\u003e\u003ctr\u003e\u003ctd\u003e\u003cstrong\u003eRelease\u003c/strong\u003e\u003c/td\u003e\u003ctd\u003e\u003cstrong\u003eFixed in mod pack\u003c/strong\u003e\u003c/td\u003e\u003ctd\u003e\u003cstrong\u003eAPAR\u003c/strong\u003e\u003c/td\u003e\u003ctd\u003e\u003cstrong\u003eDownload URL\u003c/strong\u003e\u003c/td\u003e\u003c/tr\u003e\u003ctr\u003e\u003ctd\u003eV11.5\u003c/td\u003e\u003ctd\u003eTBD\u003c/td\u003e\u003ctd\u003e\u003ca href=\"https://www.ibm.com/mysupport/s/defect/aCIgJ000000ECJ3/dt471717\" rel=\"nofollow\"\u003eDT471717\u003c/a\u003e\u003c/td\u003e\u003ctd\u003e\u003cp\u003eSpecial Build #87098 or later for V11.5.9 available at this link:\u003cbr/\u003e\u003ca href=\"https://www.ibm.com/support/pages/node/7087189\" rel=\"noopener noreferrer nofollow\"\u003ehttps://www.ibm.com/support/pages/node/7087189\u003c/a\u003e\u003c/p\u003e\u003c/td\u003e\u003c/tr\u003e\u003ctr\u003e\u003ctd\u003eV12.1\u003c/td\u003e\u003ctd\u003ev12.1.5\u003c/td\u003e\u003ctd\u003e\u003ca href=\"https://www.ibm.com/mysupport/s/defect/aCIgJ000000ECJ3/dt471717\" rel=\"nofollow\"\u003eDT471717\u003c/a\u003e\u003c/td\u003e\u003ctd\u003e\u003cp\u003eSpecial Build #87349 or later for V12.1.4 available at this link: \u003ca href=\"https://www.ibm.com/support/pages/node/7267513\" rel=\"nofollow\"\u003ehttps://www.ibm.com/support/pages/node/7267513\u003c/a\u003e\u003c/p\u003e\u003c/td\u003e\u003c/tr\u003e\u003c/tbody\u003e\u003c/table\u003e\u003c/div\u003e\u003cp\u003e\u003c/p\u003e\u003cp\u003eIBM 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.\u003c/p\u003e"
            }
          ],
          "value": "Customers running any vulnerable modpack 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\nV12.1v12.1.5 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."
        }
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      "title": "IBM\u00ae Db2\u00ae is vulnerable to buffer overflow in setgid helper db2flacc which can lead to privilege escalation and instance compromise from an unprivileged shell"
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    "dateReserved": "2026-06-01T11:45:31.382Z",
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    "state": "PUBLISHED"
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  "dataVersion": "5.2"
}

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.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

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Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.

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CNVD-2026-31546

CVE-2026-10535 (GCVE-0-2026-10535)

Tags

Sightings

Nomenclature

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