Security readout for executives and security teams
Plain-English summary
CVE-2026-10028 can let a remote party make certain Linux applications loop endlessly while checking a malicious certificate chain. The result is CPU exhaustion and denial of service for the affected process or worker. The impact is availability-only and rated medium, but it matters for services that process untrusted TLS certificates.
Executive priority
Treat this as a moderate availability risk. It should enter normal vulnerability management quickly, with higher priority for systems where service workers can be exhausted by untrusted TLS interactions.
Technical view
The flaw is CWE-835 in glib-networking's GnuTLS backend. During certificate verification, a circular issuer relationship in a crafted chain can cause unbounded traversal and an infinite loop. Red Hat lists glib-networking on RHEL 6, 7, 8, 9, and 10 as affected. CVSS 3.1 is 4.3, AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L.
Likely exposure
Exposure is most likely on Red Hat Enterprise Linux systems running applications that use glib-networking with the GnuTLS backend and perform certificate verification against untrusted certificate chains.
Exploitation context
The provided sources do not show CISA KEV listing or active exploitation. Exploitation requires presenting a crafted circular certificate chain to an affected verifying application, causing denial of service rather than data theft or code execution.
Researcher notes
Key unresolved details are fixed package versions, distribution backports, and practical product-level exposure. The source bundle supports denial of service through certificate-chain verification only, not confidentiality impact, integrity impact, code execution, or confirmed exploitation in the wild.
Mitigation direction
- Monitor Red Hat and GNOME guidance for fixed glib-networking packages.
- Apply supported vendor updates when they become available.
- Prioritize internet-facing or untrusted TLS-processing workloads first.
- Review worker isolation and restart behavior for affected applications.
- Consider reducing exposure to untrusted certificate chains where operationally feasible.
Validation and detection
- Inventory RHEL 6, 7, 8, 9, and 10 systems with glib-networking installed.
- Identify applications using glib-networking with the GnuTLS backend.
- Confirm whether those applications verify certificates from untrusted remote sources.
- Check Red Hat advisory status for affected package versions and errata.
- Review monitoring for unexplained CPU saturation in TLS-processing workers.
Public sources used
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
CWE-835: Exact CWE lookup
Use the exact CWE identifier as the starting point before reviewing related ATT&CK behavior. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.
Open ATT&CK lookupCVE-2026-10028 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- Medium
- CVSS
- 4.3 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
SSVC decision data
CVSS vector scores
1 official scoreWe collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L2.81.4redhatVulnerability scoring details
Base CVSS 3.1 score
4.3MediumVector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L
Vulnerability timeline
Timeline events are normalized from CVE metadata, CNA source timelines, ADP timelines, and KEV metadata when present.
- Source timelineredhat
Reported to Red Hat.
- CVE reservedCVE Program
The CVE ID was reserved by the assigning CNA.
- Source timelineredhat
Made public.
- CVE publishedCVE Program
The CVE record was published.
- CVE updatedCVE Program
The CVE record metadata indicates this as the latest update time.
ADP provider summaries
Source materials
- CVE List V5 sourceCVE List V5
- https://access.redhat.com/security/cve/CVE-2026-10028CVE reference, redhat · vdb-entry, x_refsource_REDHAT
- RHBZ#2465152CVE reference, redhat · issue-tracking, x_refsource_REDHAT
- https://gitlab.gnome.org/GNOME/glib-networking/-/work_items/231CVE reference, redhat
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.
Loop with Unreachable Exit Condition ('Infinite Loop')
Loop with Unreachable Exit Condition ('Infinite Loop') represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.