Vulnerability-Lookup

CVE-2026-16461 (GCVE-0-2026-16461)

Vulnerability from cvelistv5 – Published: 2026-07-21 11:42 – Updated: 2026-11-05 16:47

Title

Rpcbind: rpcbind: stack buffer overflow in rpcinfo rpcbdump() short-mode version-list formatting

Summary

A stack-based buffer overflow was found in rpcbind's rpcinfo utility. In rpcbdump() short mode (used by `rpcinfo -s`), version numbers from a remote RPCBPROC_DUMP reply are written into a fixed-size stack buffer without bounds checking. A user or administrator who runs `rpcinfo -s` against a malicious or compromised rpcbind endpoint could experience a crash or denial of service of the rpcinfo client.

Severity

6.5 (Medium)


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

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-07-22 14:29 UTC

CWE

CWE-121 - Stack-based Buffer Overflow

Assigner

redhat CNA under the redhat root

CNA scorecard B 82/100 over 1209 records in the last 180 days details

References

2 references

URL	Tags
https://access.redhat.com/security/cve/CVE-2026-16461	vdb-entryx_refsource_REDHAT
https://bugzilla.redhat.com/show_bug.cgi?id=2502719	issue-trackingx_refsource_REDHAT

Impacted products

5 products

Vendor	Product	Version
Red Hat	Red Hat Enterprise Linux 10	cpe:/a:redhat:enterprise_linux:10
Red Hat	Red Hat Enterprise Linux 8	cpe:/a:redhat:enterprise_linux:8
Red Hat	Red Hat Enterprise Linux 9	cpe:/a:redhat:enterprise_linux:9
Red Hat	Red Hat OpenShift Container Platform 4	cpe:/a:redhat:openshift:4
Red Hat	Red Hat OpenShift Container Platform 5	cpe:/a:redhat:openshift:5

Date Public

2026-07-20 14:49

Credits

Red Hat would like to thank Aisle Research for reporting this issue.

Show details on NVD website

JSON

To clipboard

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FKIE_CVE-2026-16461

Vulnerability from fkie_nvd - Published: 2026-07-21 12:17 - Updated: 2026-11-05 17:18

Severity

6.5 (Medium) - CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

Summary

References

	URL	Tags
	secalert@redhat.com	https://access.redhat.com/security/cve/CVE-2026-16461
	secalert@redhat.com	https://bugzilla.redhat.com/show_bug.cgi?id=2502719

Impacted products

	Vendor	Product	Version

JSON

To clipboard

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  ],
  "id": "CVE-2026-16461",
  "lastModified": "2026-11-05T17:18:15.120",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "HIGH",
          "baseScore": 6.5,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "REQUIRED",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 2.8,
        "impactScore": 3.6,
        "source": "secalert@redhat.com",
        "type": "Secondary"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-16461",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2026-07-22T14:29:48.233539Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2026-07-21T12:17:21.030",
  "references": [
    {
      "source": "secalert@redhat.com",
      "url": "https://access.redhat.com/security/cve/CVE-2026-16461"
    },
    {
      "source": "secalert@redhat.com",
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2502719"
    }
  ],
  "sourceIdentifier": "secalert@redhat.com",
  "vulnStatus": "Awaiting Analysis",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-121"
        }
      ],
      "source": "secalert@redhat.com",
      "type": "Secondary"
    }
  ]
}

GHSA-QH7W-564Q-QRC7

Vulnerability from github – Published: 2026-07-21 12:33 – Updated: 2026-07-21 12:33

Details

A stack-based buffer overflow was found in rpcbind's rpcinfo utility. In rpcbdump() short mode (used by rpcinfo -s), version numbers from a remote RPCBPROC_DUMP reply are written into a fixed-size stack buffer without bounds checking. A user or administrator who runs rpcinfo -s against a malicious or compromised rpcbind endpoint could experience a crash or denial of service of the rpcinfo client.

Severity

6.5 (Medium)


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

Show details on source website

JSON

To clipboard

{
  "affected": [],
  "aliases": [
    "CVE-2026-16461"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-121"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-07-21T12:17:21Z",
    "severity": "MODERATE"
  },
  "details": "A stack-based buffer overflow was found in rpcbind\u0027s rpcinfo utility. In rpcbdump() short mode (used by `rpcinfo -s`), version numbers from a remote RPCBPROC_DUMP reply are written into a fixed-size stack buffer without bounds checking. A user or administrator who runs `rpcinfo -s` against a malicious or compromised rpcbind endpoint could experience a crash or denial of service of the rpcinfo client.",
  "id": "GHSA-qh7w-564q-qrc7",
  "modified": "2026-07-21T12:33:36Z",
  "published": "2026-07-21T12:33:36Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-16461"
    },
    {
      "type": "WEB",
      "url": "https://access.redhat.com/security/cve/CVE-2026-16461"
    },
    {
      "type": "WEB",
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2502719"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ]
}

MSRC_CVE-2026-16461

Vulnerability from csaf_microsoft - Published: 2026-07-25 01:07 - Updated: 2026-07-27 01:44

Summary

Rpcbind: rpcbind: stack buffer overflow in rpcinfo rpcbdump() short-mode version-list formatting

Scope

1 vulnerability in this advisory, including CVE-2026-16461.

CVE-2026-16461

6.5 (Medium)


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

Fixed: 1 product Known affected: 1 product

https://learn.microsoft.com/en-us/azure/azure-linux/tutoria…

Open the full advisory

OPENSUSE-SU-2026:11728-1

Vulnerability from csaf_opensuse - Published: 2026-09-08 00:00 - Updated: 2026-09-17 17:23

Summary

rpcbind-1.2.9-2.1 on GA media

Severity

Moderate

Scope

1 vulnerability in this advisory, including CVE-2026-16461.

CVE-2026-16461

6.5 (Medium)


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

Recommended: 4 products

Open the full advisory

OPENSUSE-SU-2026:21765-1

Vulnerability from csaf_opensuse - Published: 2026-09-06 16:45 - Updated: 2026-11-10 16:00

Summary

Security update for rpcbind

Severity

Moderate

Scope

1 vulnerability in this advisory, including CVE-2026-16461.

CVE-2026-16461

6.5 (Medium)


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

Recommended: 4 products

Open the full advisory

SUSE-SU-2026:23451-1

Vulnerability from csaf_suse - Published: 2026-09-03 08:09 - Updated: 2026-09-20 18:41

Summary

Security update for rpcbind

Severity

Moderate

Scope

1 vulnerability in this advisory, including CVE-2026-16461.

CVE-2026-16461

6.5 (Medium)


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

Recommended: 3 products

Open the full advisory

SUSE-SU-2026:23495-1

Vulnerability from csaf_suse - Published: 2026-09-06 16:45 - Updated: 2026-10-15 17:12

Summary

Security update for rpcbind

Severity

Moderate

Scope

1 vulnerability in this advisory, including CVE-2026-16461.

CVE-2026-16461

6.5 (Medium)


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

Recommended: 4 products

Open the full advisory

SUSE-SU-2026:23518-1

Vulnerability from csaf_suse - Published: 2026-09-03 08:49 - Updated: 2026-09-17 16:21

Summary

Security update for rpcbind

Severity

Moderate

Scope

1 vulnerability in this advisory, including CVE-2026-16461.

CVE-2026-16461

6.5 (Medium)


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

Recommended: 4 products

Open the full advisory

SUSE-SU-2026:23628-1

Vulnerability from csaf_suse - Published: 2026-09-06 16:45 - Updated: 2026-09-29 17:28

Summary

Security update for rpcbind

Severity

Moderate

Scope

1 vulnerability in this advisory, including CVE-2026-16461.

CVE-2026-16461

6.5 (Medium)


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

Recommended: 8 products

Open the full advisory

SUSE-SU-2026:4075-1

Vulnerability from csaf_suse - Published: 2026-09-08 07:10 - Updated: 2026-09-17 16:47

Summary

Security update for rpcbind

Severity

Moderate

Scope

1 vulnerability in this advisory, including CVE-2026-16461.

CVE-2026-16461

6.5 (Medium)


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

Recommended: 4 products

Open the full advisory

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.

Vulnerability timeline

Sightings and recorded dates, grouped by day · UTC

Order JSON

How durations are calculated

Following the VTEM framework (Black Hat USA 2015), time to patch starts when the vendor or a coordinator was informed, total time to patch at discovery, and disclosure to patch at public disclosure; vendor response time runs from the report to its acknowledgement. Time to exploit and time unpatched start at the earliest discovery or report, falling back to public disclosure. Unpatched time ends at the first recorded patch, or the calculation time when no patch is recorded. Exploitation to patch shows the interval between those two events; a published proof of concept is a public exploit, not exploitation.

Each result shows its source dates. A negative interval means the end event came first; when date-only inputs leave the order open, the result says so. Date-only inputs are approximate. The earliest evidence wins: KEV report dates and sightings are labelled as such. Records describing another vulnerability are listed but never calculated from, and a PoC alone does not establish exploitation. Missing patch evidence does not prove that no patch exists. Filters below change the event list only.

Publication & reservation Sightings KEV catalogs Other timestamps

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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.

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CVE-2026-16461 (GCVE-0-2026-16461)

Tags

Sightings

Nomenclature

Vulnerability timeline

Related by attack behaviour