CVE-2026-859775.3MediumCWE-1050

CVE-2026-85977: Libtirpc: denial of service via unbounded memory allocation during portmapper response decoding

Red Hat · Red Hat Hardened Images

Vendor fix available · Affected: Red Hat Hardened Images · Exploitation: unlikely (under 1%)

Not in CyberSIXT coverage yet: no article names this CVE. This page shows the public record.

0.4%probability of exploitation in the next 30 days

36th percentile

050100

Higher than 36% of scored CVEs

5.3MediumCVSS 3.1

LowMediumHighCrit.

DescriptionCVE.org

A flaw was found in libtirpc. A remote attacker can exploit this vulnerability by sending specially crafted PMAPPROC_DUMP replies to a client application that uses the pmap_getmaps() function against an attacker-controlled host. This unbounded decoding can lead to excessive memory and CPU allocation, causing the client process to experience a Denial of Service (DoS) due to resource exhaustion.

Affected products10

From the CVE record. A product or version that is not listed is unknown, not unaffected.

Red Hat · Red Hat Hardened ImagesVersions not stated
Red Hat · Red Hat Enterprise Linux 10Versions not stated
Red Hat · Red Hat Enterprise Linux 6Versions not stated
Red Hat · Red Hat Enterprise Linux 7Versions not stated
Red Hat · Red Hat Enterprise Linux 8Versions not stated
Red Hat · Red Hat Enterprise Linux 9Versions not stated
Red Hat · Red Hat OpenShift AI (RHOAI)Versions not stated
Red Hat · Red Hat OpenShift Container Platform 4Versions not stated
Red Hat · Red Hat OpenShift Container Platform 4Versions not stated
Red Hat · Red Hat OpenShift Container Platform 5Versions not stated

On the Atlas

Every published CVE is on the CyberSIXT Atlas, grouped by weakness, vendor and month.

Open the Atlas

Exploitation: Unlikely (under 1%). EPSS under 1%, or no score yet.
CISA KEV: Not listed
Public check: No public nuclei template
Weakness: Excessive Platform Resource Consumption within a Loop · Denial of Service
Vendor: Red Hat
Published: October 2026
Band: Unlikely (under 1%), October 2026

CoverageNo articles yet

No CyberSIXT article names CVE-2026-85977 yet, so there is no coverage timeline, action brief or change log for it. Everything on this page comes from the public CVE record, CISA KEV, EPSS and the nuclei template index. Search the archive or see the CVEs in the news.