CVE-2025-3576 (GCVE-0-2025-3576)

Vulnerability from cvelistv5 – Published: 2025-04-15 05:55 – Updated: 2026-05-12 12:02
VLAI?
Title
Krb5: kerberos rc4-hmac-md5 checksum vulnerability enabling message spoofing via md5 collisions
Summary
A vulnerability in the MIT Kerberos implementation allows GSSAPI-protected messages using RC4-HMAC-MD5 to be spoofed due to weaknesses in the MD5 checksum design. If RC4 is preferred over stronger encryption types, an attacker could exploit MD5 collisions to forge message integrity codes. This may lead to unauthorized message tampering.
Severity ?
5.9 (Medium)
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N
CWE
Assigner
References
URL Tags
https://access.redhat.com/errata/RHSA-2025:11487 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2025:13664 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2025:13777 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2025:15000 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2025:15001 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2025:15002 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2025:15003 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2025:15004 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2025:8411 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2025:9418 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2025:9430 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/security/cve/CVE-2025-3576 vdb-entryx_refsource_REDHAT
https://bugzilla.redhat.com/show_bug.cgi?id=2359465 issue-trackingx_refsource_REDHAT
https://web.mit.edu/kerberos/krb5-1.22/krb5-1.22.html
Impacted products
Vendor Product Version
Affected: 0 , < 1.22 (semver)
Red Hat Red Hat Enterprise Linux 10 Unaffected: 0:1.21.3-8.el10_0 , < * (rpm)
    cpe:/o:redhat:enterprise_linux:10.0
 Create a notification for this product.
Red Hat Red Hat Enterprise Linux 8 Unaffected: 0:1.18.2-32.el8_10 , < * (rpm)
    cpe:/o:redhat:enterprise_linux:8::baseos
 Create a notification for this product.
Red Hat Red Hat Enterprise Linux 8.2 Advanced Update Support Unaffected: 0:1.17-19.el8_2.3 , < * (rpm)
    cpe:/o:redhat:rhel_aus:8.2::baseos
 Create a notification for this product.
Red Hat Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support Unaffected: 0:1.18.2-9.el8_4.3 , < * (rpm)
    cpe:/o:redhat:rhel_eus_long_life:8.4::baseos
    cpe:/o:redhat:rhel_aus:8.4::baseos
 Create a notification for this product.
Red Hat Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On Unaffected: 0:1.18.2-9.el8_4.3 , < * (rpm)
    cpe:/o:redhat:rhel_eus_long_life:8.4::baseos
    cpe:/o:redhat:rhel_aus:8.4::baseos
 Create a notification for this product.
Red Hat Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support Unaffected: 0:1.18.2-16.el8_6.4 , < * (rpm)
    cpe:/o:redhat:rhel_tus:8.6::baseos
    cpe:/o:redhat:rhel_e4s:8.6::baseos
    cpe:/o:redhat:rhel_aus:8.6::baseos
 Create a notification for this product.
Red Hat Red Hat Enterprise Linux 8.6 Telecommunications Update Service Unaffected: 0:1.18.2-16.el8_6.4 , < * (rpm)
    cpe:/o:redhat:rhel_tus:8.6::baseos
    cpe:/o:redhat:rhel_e4s:8.6::baseos
    cpe:/o:redhat:rhel_aus:8.6::baseos
 Create a notification for this product.
Red Hat Red Hat Enterprise Linux 8.6 Update Services for SAP Solutions Unaffected: 0:1.18.2-16.el8_6.4 , < * (rpm)
    cpe:/o:redhat:rhel_tus:8.6::baseos
    cpe:/o:redhat:rhel_e4s:8.6::baseos
    cpe:/o:redhat:rhel_aus:8.6::baseos
 Create a notification for this product.
Red Hat Red Hat Enterprise Linux 8.8 Telecommunications Update Service Unaffected: 0:1.18.2-26.el8_8.5 , < * (rpm)
    cpe:/o:redhat:rhel_e4s:8.8::baseos
    cpe:/o:redhat:rhel_tus:8.8::baseos
 Create a notification for this product.
Red Hat Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions Unaffected: 0:1.18.2-26.el8_8.5 , < * (rpm)
    cpe:/o:redhat:rhel_e4s:8.8::baseos
    cpe:/o:redhat:rhel_tus:8.8::baseos
 Create a notification for this product.
Red Hat Red Hat Enterprise Linux 9 Unaffected: 0:1.21.1-8.el9_6 , < * (rpm)
    cpe:/o:redhat:enterprise_linux:9::baseos
    cpe:/a:redhat:enterprise_linux:9::appstream
 Create a notification for this product.
Red Hat Red Hat Enterprise Linux 9 Unaffected: 0:1.21.1-8.el9_6 , < * (rpm)
    cpe:/o:redhat:enterprise_linux:9::baseos
    cpe:/a:redhat:enterprise_linux:9::appstream
 Create a notification for this product.
Red Hat Red Hat Enterprise Linux 9.0 Update Services for SAP Solutions Unaffected: 0:1.19.1-16.el9_0.4 , < * (rpm)
    cpe:/o:redhat:rhel_e4s:9.0::baseos
    cpe:/a:redhat:rhel_e4s:9.0::appstream
 Create a notification for this product.
Red Hat Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions Unaffected: 0:1.20.1-9.el9_2.3 , < * (rpm)
    cpe:/a:redhat:rhel_e4s:9.2::appstream
    cpe:/o:redhat:rhel_e4s:9.2::baseos
 Create a notification for this product.
Red Hat Red Hat Enterprise Linux 9.4 Extended Update Support Unaffected: 0:1.21.1-2.el9_4.2 , < * (rpm)
    cpe:/o:redhat:rhel_eus:9.4::baseos
    cpe:/a:redhat:rhel_eus:9.4::appstream
 Create a notification for this product.
Red Hat Red Hat Discovery 2 Unaffected: sha256:c499a099e03c7488ffe50529a34723ade191a89fcfc59d1f0edd01db2b579ca3 , < * (rpm)
    cpe:/a:redhat:discovery:2::el9
 Create a notification for this product.
Red Hat Red Hat Enterprise Linux 6     cpe:/o:redhat:enterprise_linux:6
 Create a notification for this product.
Red Hat Red Hat Enterprise Linux 7     cpe:/o:redhat:enterprise_linux:7
 Create a notification for this product.
Red Hat Red Hat OpenShift Container Platform 4     cpe:/a:redhat:openshift:4
 Create a notification for this product.
Date Public ?
2025-04-15 00:00
Show details on NVD website
To clipboard 

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If RC4 is preferred over stronger encryption types, an attacker could exploit MD5 collisions to forge message integrity codes. This may lead to unauthorized message tampering.\"}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en\", \"type\": \"CWE\", \"cweId\": \"CWE-328\", \"description\": \"Use of Weak Hash\"}]}], \"providerMetadata\": {\"orgId\": \"53f830b8-0a3f-465b-8143-3b8a9948e749\", \"shortName\": \"redhat\", \"dateUpdated\": \"2026-02-17T07:33:07.311Z\"}, \"x_redhatCweChain\": \"CWE-328: Use of Weak Hash\"}}",
      "cveMetadata": "{\"cveId\": \"CVE-2025-3576\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2026-02-17T07:33:07.311Z\", \"dateReserved\": \"2025-04-14T09:53:43.906Z\", \"assignerOrgId\": \"53f830b8-0a3f-465b-8143-3b8a9948e749\", \"datePublished\": \"2025-04-15T05:55:26.732Z\", \"assignerShortName\": \"redhat\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}


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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.