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CVE-2026-16461— Rpcbind: rpcbind: stack buffer overflow in rpcinfo rpcbdump() short-mode version-list formatting

Quick assessment

Affected
Red Hat Red Hat Enterprise Linux 10
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

rpcbind project rpcinfo是rpcbind project团队的一个查询和探测主机RPC服务注册信息的命令行工具。 rpcbind project rpcinfo版本存在缓冲区错误漏洞，该漏洞源于rpcbind的rpcinfo utility中存在栈缓冲区溢出，在rpcbdump()短模式（由 使用）中，来自远程RPCBPROC_DUMP回复的版本号在没有边界检查的情况下写入固定大小栈缓冲区，可能导致运行 的用户或管理员遭遇rpcinfo客户

CVSS 6.5 · Medium EPSS 0.26% · P16

Possible ATT&CK Techniques 1 AI

T1203 · Exploitation for Client Execution

Affected Version Matrix 4

VendorProduct Version RangeStatus
Red Hat Red Hat Enterprise Linux 10 any affected
Red Hat Red Hat Enterprise Linux 8 any affected
Red Hat Red Hat Enterprise Linux 9 any affected
Red Hat Red Hat OpenShift Container Platform 4 any affected
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I. Basic Information for CVE-2026-16461

Vulnerability Information
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Vulnerability Title
Rpcbind: rpcbind: stack buffer overflow in rpcinfo rpcbdump() short-mode version-list formatting
Source: CVE Program / CVE List V5
Vulnerability Description
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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
栈缓冲区溢出
Source: CVE Program / CVE List V5
Vulnerability Title
rpcbind project rpcinfo 缓冲区错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
rpcbind project rpcinfo是rpcbind project团队的一个查询和探测主机RPC服务注册信息的命令行工具。 rpcbind project rpcinfo版本存在缓冲区错误漏洞，该漏洞源于rpcbind的rpcinfo utility中存在栈缓冲区溢出，在rpcbdump()短模式（由`rpcinfo -s`使用）中，来自远程RPCBPROC_DUMP回复的版本号在没有边界检查的情况下写入固定大小栈缓冲区，可能导致运行`rpcinfo -s`的用户或管理员遭遇rpcinfo客户
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Red Hat Red Hat Enterprise Linux 10 - cpe:/o:redhat:enterprise_linux:10
Red Hat Red Hat Enterprise Linux 8 - cpe:/o:redhat:enterprise_linux:8
Red Hat Red Hat Enterprise Linux 9 - cpe:/o:redhat:enterprise_linux:9
Red Hat Red Hat OpenShift Container Platform 4 - cpe:/a:redhat:openshift:4

II. Public POCs for CVE-2026-16461

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III. Intelligence Information for CVE-2026-16461

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Vendor Advisories for CVE-2026-16461 (1)

Same Patch Batch · Red Hat · 2026-07-21 · 20 CVEs total

CVE-2026-59851 8.8 HIGH Libssh: libssh: authentication bypass via missing gssapi principal check
CVE-2026-16493 7.8 HIGH Ansible-core: argument injection in ansible-galaxy collection install via git clone (incom
CVE-2026-16445 7.5 HIGH Dracut: dracut: root code execution via dhcp options command injection in networkmanager i
CVE-2026-15927 6.8 MEDIUM Quay: mirror-registry: ssrf: repo-level mirror accepts external_reference without url vali
CVE-2026-15370 6.7 MEDIUM Libssh: libssh: stack buffer overflow in sftp server longname construction
CVE-2026-59843 6.5 MEDIUM Libssh: libssh: denial of service via zero advertised channel packet size
CVE-2026-59844 6.5 MEDIUM Libssh: libssh: denial of service via oversized sftp read length
CVE-2026-59847 5.9 MEDIUM Libssh: libssh: integrity downgrade via openssl aes-gcm tag verification
CVE-2026-15811 5.8 MEDIUM Kronosnet: kronosnet: encryption key exposure in memory after cryptographic configuration
CVE-2026-59845 5.3 MEDIUM Libssh: libssh: denial of service via unchecked proxycommand fork() failure
CVE-2026-59848 5.3 MEDIUM Libssh: libssh: denial of service via sftp responses with unknown request ids
CVE-2026-15812 4.8 MEDIUM Kronosnet: kronosnet: access control list bypass via link id spoofing on unencrypted dynam
CVE-2026-59850 4.3 MEDIUM Libssh: libssh: use-after-free via data callbacks on closed channels
CVE-2026-12548 4.2 MEDIUM Libsoup: heap out-of-bounds read in libsoup due to integer truncation
CVE-2026-59846 3.9 LOW Libssh: libssh: information disclosure via proxycommand %r username expansion
CVE-2026-59842 3.7 LOW Libssh: libssh: information disclosure via short gssapi curve25519 public key
CVE-2026-12547 3.4 LOW Libsoup: information disclosure in libsoup via soupauthmanager proxy credential leak on pr
CVE-2026-59849 3.1 LOW Libssh: libssh: denial of service via automatic certificate authentication loop
CVE-2026-16517 2.9 LOW Libarchive: libarchive: signed integer overflow in archive_write_zip_header

IV. Related Vulnerabilities

Same product: Red Hat Enterprise Linux 10
Same vendor: Red Hat
Same weakness: CWE-121

V. Comments for CVE-2026-16461

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