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CVE-2026-16461· NVD / CVE Program· CNA redhat

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

Noroxi assessment

Priority: Monitor (action score 26/100)

  • The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
  • Probability of exploitation in the next 30 days: 0.25% (FIRST EPSS).
  • Anyone who can reach it over the internet can trigger it. No account or password is required. A user must open a link or visit a page. No special conditions are required; it is repeatable.
  • Fixed version: azl3 rpcbind 1.2.6-1 on Azure Linux 3.0 1.2.9-1.

Low priority for now. Upgrade to azl3 rpcbind 1.2.6-1 on Azure Linux 3.0 1.2.9-1 or later.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · FIRST EPSS

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.

MediumCVSS 6.5 · v3.1—No exploit Fix available
Published
Jul 21, 2026
Updated
Jul 22, 2026
EPSS
0.2% · 16th percentile

Report tools

JSON

Action score

26

Monitor

Low priority for now.

CVSS
26 / 40 · 6.5 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.2%

CISA SSVC decision

Exploitation
none
Automatable
no
Technical impact
partial

Vulnrichment: CISA's decision-tree inputs.

CNA vs NVD score

NVD
—
CNA · redhat
6.5
NVD has not scored this yet; the score shown is the CNA’s.

The score given by the assigning authority versus NVD’s independent score. A gap means the severity is contested.

Get told when this record changes

  • Not in KEV: no record of exploitation in the wild
  • No public exploit code on record
  • A fix has been released

If any of these changes, we'll tell you in the daily email digest.

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When you'll hear from us

  • when it enters CISA KEV
  • when exploit code appears or is weaponized
  • when the record is updated (including a fixed version)
  • when EPSS rises 20 points in a week

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Noroxi analysis

What does it mean in your environment?

The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.

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Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

—

Versions reported by the vendor

Affected version ranges reported by the assigning authority (redhat). Independent of NVD's CPE analysis and usually ahead of it.

  • Red Hat Red Hat Enterprise Linux 10

    • all versionsaffected

  • Red Hat Red Hat Enterprise Linux 8

    • all versionsaffected

  • Red Hat Red Hat Enterprise Linux 9

    • all versionsaffected

  • Red Hat Red Hat OpenShift Container Platform 4

    • all versionsaffected

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

EcosystemPackageAffected rangeFix
Debian:12rpcbindall versions—
openSUSE:Leap 16.0rpcbindbefore 1.2.9-160000.2.11.2.9-160000.2.1
openSUSE:Tumbleweedrpcbindbefore 1.2.9-2.11.2.9-2.1
SUSE:Linux Enterprise Micro 5.3rpcbindbefore 0.2.3-150000.5.17.10.2.3-150000.5.17.1
SUSE:Linux Enterprise Server LTSS Extended Security 12 SP5rpcbindbefore 0.2.3-24.15.10.2.3-24.15.1
SUSE:Linux Micro 6.0rpcbindbefore 1.2.9-2.11.2.9-2.1
SUSE:Linux Micro 6.1rpcbindbefore 1.2.9-slfo.1.1_2.11.2.9-slfo.1.1_2.1
SUSE:Linux Micro 6.2rpcbindbefore 1.2.9-160000.2.11.2.9-160000.2.1

Same product

red hat: all records

Other highest-scoring records for the same primary product.

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  • CVE-2025-7493Freeipa: idm: privilege escalation from host to domain admin in freeipa
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  • CVE-2025-49796Libxml: type confusion leads to denial of service (dos)
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Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

Product / packageFixed versionSource
azl3 rpcbind 1.2.6-1 on Azure Linux 3.01.2.9-1 · CBL-Mariner ReleasesMicrosoft (MSRC)
opensuse:rpcbind1.2.9-2.1 · openSUSE:TumbleweedPackage registry (OSV)
suse:rpcbind1.2.9-2.1 · SUSE:Linux Micro 6.0Package registry (OSV)

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

EPSS, last 120 days

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

No commit or PR link among the references.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

  • CVE-2026-1761169 days apartLibsoup: stack-based buffer overflow in libsoup multipart response parsingmultipart http response
    34Monitor
  • CVE-2026-0719194 days apartLibsoup: signed to unsigned conversion error leading to stack-based buffer overflow in libsoup ntlm authentication
    34Monitor
  • CVE-2026-4395850 days apartRrdtool: rrdtool: stack buffer overflow allows local code execution or denial of service
    31Monitor
  • CVE-2026-5969212 days apartGstreamer1-plugins-bad-free: gstreamer: dtls certificate subject dn stack buffer overflow in openssl_verify_callback
    30Monitor
  • CVE-2026-162771 days apartRpcbind: rpcbind: stack buffer overflow in rpcinfo rpcbaddrlist()
    26Monitor
  • CVE-2025-12464263 days apartQemu-kvm: stack buffer overflow in e1000 device via short frames in loopback mode
    24Monitor

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

—

Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

Technical details

Attack conditions

  • Anyone who can reach it over the internet can trigger it.
  • No account or password is required.
  • A user must open a link or visit a page.
  • No special conditions are required; it is repeatable.

If successful

Confidentiality
none
Integrity
none
Availability
high · the service can be disrupted
Attack vector
Network
Attack complexity
Low
Privileges required
None
User interaction
Required
Scope
Unchanged
Confidentiality impact
None
Integrity impact
None
Availability impact
High

Weakness class (CWE)

CWE-121 · Stack-based Buffer Overflow

CVSS vector

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

nvd-secondary

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

MITRE has no CAPEC/ATT&CK mapping for this CWE.

Change log

  1. Fix✗ → ✓

For records you follow, these changes also arrive as notifications. →

References

Show all references (1 more)

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records