VDB
RHSA-2026:53365
RHSA-2026:53365
PUBLISHED
CVSS 7.5 HIGH
A remote attacker can exploit this by providing specially crafted BER/CER/DER-encoded ASN.1 data with a large exponent in the REAL value. When the application subsequently prints, logs, compares, or performs arithmetic on the decoded value, this can cause excessive CPU and memory consumption, leading to a denial of service (DoS).
Risk Scores
CVSS 3.1
7.5
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Red Hat | fence-virtd-tcp-0:4.10.0-110.el9_8.6.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 9) | 4.10.0-110.el9 |
| Red Hat | fence-agents-ilo-mp-0:4.10.0-110.el9_8.6.noarch as a component of Red Hat Enterprise Linux AppStream (v. 9) | 4.10.0-110.el9 |
| Red Hat | fence-agents-apc-0:4.10.0-110.el9_8.6.noarch as a component of Red Hat Enterprise Linux AppStream (v. 9) | 4.10.0-110.el9 |
| Red Hat | fence-agents-debugsource-0:4.10.0-110.el9_8.6.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 9) | 4.10.0-110.el9 |
| Red Hat | fence-agents-debugsource-0:4.10.0-110.el9_8.6.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 9) | 4.10.0-110.el9 |
| Red Hat | fence-agents-kubevirt-debuginfo-0:4.10.0-110.el9_8.6.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 9) | 4.10.0-110.el9 |
| Red Hat | fence-agents-aws-0:4.10.0-110.el9_8.6.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 9) | 4.10.0-110.el9 |
| Red Hat | fence-virtd-cpg-0:4.10.0-110.el9_8.6.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 9) | 4.10.0-110.el9 |
| Red Hat | fence-virtd-multicast-debuginfo-0:4.10.0-110.el9_8.6.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 9) | 4.10.0-110.el9 |
| Red Hat | fence-agents-debuginfo-0:4.10.0-110.el9_8.6.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 9) | 4.10.0-110.el9 |
| Red Hat | fence-virtd-tcp-debuginfo-0:4.10.0-110.el9_8.6.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 9) | 4.10.0-110.el9 |
| Red Hat | fence-agents-vmware-soap-0:4.10.0-110.el9_8.6.noarch as a component of Red Hat Enterprise Linux AppStream (v. 9) | 4.10.0-110.el9 |
| Red Hat | fence-agents-cisco-ucs-0:4.10.0-110.el9_8.6.noarch as a component of Red Hat Enterprise Linux AppStream (v. 9) | 4.10.0-110.el9 |
| Red Hat | fence-agents-ilo-ssh-0:4.10.0-110.el9_8.6.noarch as a component of Red Hat Enterprise Linux AppStream (v. 9) | 4.10.0-110.el9 |
| Red Hat | fence-agents-openstack-0:4.10.0-110.el9_8.6.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 9) | 4.10.0-110.el9 |
| Red Hat | fence-agents-kdump-0:4.10.0-110.el9_8.6.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 9) | 4.10.0-110.el9 |
| Red Hat | fence-agents-kdump-debuginfo-0:4.10.0-110.el9_8.6.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 9) | 4.10.0-110.el9 |
| Red Hat | fence-agents-aliyun-0:4.10.0-110.el9_8.6.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 9) | 4.10.0-110.el9 |
| Red Hat | fence-agents-kubevirt-debuginfo-0:4.10.0-110.el9_8.6.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 9) | 4.10.0-110.el9 |
| Red Hat | fence-agents-all-0:4.10.0-110.el9_8.6.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 9) | 4.10.0-110.el9 |
…and 76 more
Timeline
- Aug 11, 2026 CVE Published
- Aug 18, 2026 CVE Updated
- Aug 18, 2026 Distribution Patch
- Aug 18, 2026 Distribution Patch
- Aug 18, 2026 Security Advisory
- Aug 18, 2026 Security Advisory
References
- https://access.redhat.com/errata/RHSA-2026:53365 advisory
- https://access.redhat.com/security/updates/classification/#important advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=2500041 issue
- https://security.access.redhat.com/data/csaf/v2/advisories/2026/rhsa-2026_53365.json advisory
- https://access.redhat.com/security/cve/CVE-2026-59886 advisory
- https://www.cve.org/CVERecord?id=CVE-2026-59886 advisory
- https://nvd.nist.gov/vuln/detail/CVE-2026-59886 advisory
- https://github.com/pyasn1/pyasn1/commit/e60c691cb91addb8fcefa2f537e85ede6fb1e886 advisory
- https://github.com/pyasn1/pyasn1/releases/tag/v0.6.4 advisory
- https://github.com/pyasn1/pyasn1/security/advisories/GHSA-hm4w-wwcw-mr6r advisory