Vulnerability-Lookup

Vulnerability from bitnami_vulndb

Published

2026-05-18 08:57

Modified

2026-09-08 08:34

Summary

Apache Tomcat: APR/Native Connector crash leading to DoS

Details

This issue affects Apache Tomcat: from 9.0.0 through 9.0.106. The following versions were EOL at the time the CVE was created but are known to be affected: 8.5.0 through 8.5.100. Other, older, EOL versions may also be affected.

Users are recommended to upgrade to version 9.0.107, which fixes the issue.

JSON

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{
  "affected": [
    {
      "package": {
        "ecosystem": "Bitnami",
        "name": "tomcat",
        "purl": "pkg:bitnami/tomcat"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "9.0.0"
            },
            {
              "fixed": "9.0.107"
            }
          ],
          "type": "SEMVER"
        }
      ],
      "severity": [
        {
          "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
          "type": "CVSS_V3"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2025-52434"
  ],
  "database_specific": {
    "cpes": [
      "cpe:2.3:a:apache:tomcat:*:*:*:*:*:maven:*:*"
    ],
    "severity": "High"
  },
  "details": "Concurrent Execution using Shared Resource with Improper Synchronization (\u0027Race Condition\u0027) vulnerability in Apache Tomcat when using the APR/Native connector. This was particularly noticeable with client initiated closes of HTTP/2 connections.\n\nThis issue affects Apache Tomcat: from 9.0.0 through 9.0.106.\nThe following versions were EOL at the time the CVE was created but are \nknown to be affected: 8.5.0 through 8.5.100. Other, older, EOL versions \nmay also be affected.\n\n\nUsers are recommended to upgrade to version 9.0.107, which fixes the issue.",
  "id": "BIT-tomcat-2025-52434",
  "modified": "2026-09-08T08:34:36.952Z",
  "published": "2026-05-18T08:57:54.038Z",
  "references": [
    {
      "type": "WEB",
      "url": "http://www.openwall.com/lists/oss-security/2025/07/10/11"
    },
    {
      "type": "ADVISORY",
      "url": "https://lists.apache.org/thread/gxgh65004f25y8519coth6w7vchww030"
    },
    {
      "type": "WEB",
      "url": "https://lists.debian.org/debian-lts-announce/2025/07/msg00009.html"
    },
    {
      "type": "WEB",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-52434"
    }
  ],
  "schema_version": "1.6.2",
  "summary": "Apache Tomcat: APR/Native Connector crash leading to DoS"
}

CVE-2025-52434 (GCVE-0-2025-52434)

Vulnerability from cvelistv5 – Published: 2025-07-10 19:03 – Updated: 2025-11-04 21:11

Title

Apache Tomcat: APR/Native Connector crash leading to DoS

Summary

Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition') vulnerability in Apache Tomcat when using the APR/Native connector. This was particularly noticeable with client initiated closes of HTTP/2 connections. This issue affects Apache Tomcat: from 9.0.0.M1 through 9.0.106. The following versions were EOL at the time the CVE was created but are known to be affected: 8.5.0 through 8.5.100. Other, older, EOL versions may also be affected. Users are recommended to upgrade to version 9.0.107, which fixes the issue.

Severity

7.5 (High)


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

SSVC

Exploitation: none Automatable: yes Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2025-07-11 14:02 UTC

CWE

CWE-362 - Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')

Assigner

apache mitre root

References

3 references

URL	Tags
https://lists.apache.org/thread/gxgh65004f25y8519…	vendor-advisory
https://lists.debian.org/debian-lts-announce/2025…
http://www.openwall.com/lists/oss-security/2025/0…

Impacted products

1 product

Vendor	Product	Version
Apache Software Foundation	Apache Tomcat	Affected: 9.0.0.M1 , ≤ 9.0.106 (semver) Affected: 8.5.0 , ≤ 8.5.100 (semver) Unknown: 5 , < 8.5.0 (semver) Unknown: 10.0.0-M1 , ≤ 10.0.27 (semver)

Credits

Nacl 12SqweR WHOAMI yyzmoon

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "cvssV3_1": {
              "attackComplexity": "LOW",
              "attackVector": "NETWORK",
              "availabilityImpact": "HIGH",
              "baseScore": 7.5,
              "baseSeverity": "HIGH",
              "confidentialityImpact": "NONE",
              "integrityImpact": "NONE",
              "privilegesRequired": "NONE",
              "scope": "UNCHANGED",
              "userInteraction": "NONE",
              "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
              "version": "3.1"
            }
          },
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              "content": {
                "id": "CVE-2025-52434",
                "options": [
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                  },
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                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2025-07-11T14:02:46.073154Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2025-07-11T14:04:04.250Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      },
      {
        "providerMetadata": {
          "dateUpdated": "2025-11-04T21:11:38.474Z",
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          },
          {
            "url": "http://www.openwall.com/lists/oss-security/2025/07/10/11"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
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        {
          "defaultStatus": "unaffected",
          "product": "Apache Tomcat",
          "vendor": "Apache Software Foundation",
          "versions": [
            {
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              "status": "affected",
              "version": "8.5.0",
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        }
      ],
      "metrics": [
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              "text": "important"
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    "datePublished": "2025-07-10T19:03:47.225Z",
    "dateReserved": "2025-06-16T07:00:46.986Z",
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}

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.

Related by attack behaviour

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.