Red Hat Enterprise Linux 8 Rpcinfo stack-based overflow

CVSS Meta Temp Score
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CTI Interest Score
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7.5$5k-$25k2.95-

Summaryinfo

A vulnerability was found in Red Hat Enterprise Linux 8, Enterprise Linux 9, Enterprise Linux 10 and OpenShift Container Platform and classified as critical. This affects an unknown function of the component Rpcinfo. Executing a manipulation can lead to stack-based overflow. This vulnerability appears as CVE-2026-16277. The attack may be performed from remote. There is no available exploit.

Detailsinfo

A vulnerability was found in Red Hat Enterprise Linux 8, Enterprise Linux 9, Enterprise Linux 10 and OpenShift Container Platform (the affected version is unknown). It has been declared as critical. This vulnerability affects an unknown code of the component Rpcinfo. The manipulation with an unknown input leads to a stack-based overflow vulnerability. The CWE definition for the vulnerability is CWE-121. A stack-based buffer overflow condition is a condition where the buffer being overwritten is allocated on the stack (i.e., is a local variable or, rarely, a parameter to a function). As an impact it is known to affect availability. CVE summarizes:

A stack-based buffer overflow was found in rpcbind's rpcinfo utility. When querying a remote rpcbind service with `rpcinfo -l`, address information returned by the server is copied into a fixed-size buffer without sufficient bounds checking. A malicious or compromised rpcbind server could use this flaw to crash the rpcinfo client, resulting in a denial of service. The highest threat from this vulnerability is to system availability.

The advisory is shared for download at access.redhat.com. This vulnerability was named CVE-2026-16277 since 07/20/2026. The exploitation appears to be easy. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. There are neither technical details nor an exploit publicly available. The current price for an exploit might be approx. USD $5k-$25k (estimation calculated on 07/20/2026).

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2026-45950). VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.5
VulDB Meta Temp Score: 7.5

VulDB Base Score: 7.5
VulDB Temp Score: 7.5
VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv2info

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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Stack-based overflow
CWE: CWE-121 / CWE-119
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined
Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔒

Timelineinfo

07/20/2026 Advisory disclosed
07/20/2026 +0 days CVE reserved
07/20/2026 +0 days VulDB entry created
07/20/2026 +0 days VulDB entry last update

Sourcesinfo

Vendor: redhat.com

Advisory: access.redhat.com
Status: Not defined

CVE: CVE-2026-16277 (🔒)
GCVE (CVE): GCVE-0-2026-16277
GCVE (VulDB): GCVE-100-380608
EUVD: 🔒

Entryinfo

Created: 07/20/2026 16:52
Updated: 07/20/2026 18:10
Changes: 07/20/2026 16:52 (52), 07/20/2026 18:10 (1)
Complete: 🔍
Cache ID: 216::103

VulDB is the best source for vulnerability data and more expert information about this specific topic.

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