CVE-2026-29114: Dahua Information Disclosure Vulnerability

CVE-2026-29114 Overview

CVE-2026-29114 affects multiple Dahua products and allows an attacker to obtain the device's Certificate Authority (CA) root certificate. When the exposed CA is installed and trusted on client systems, an attacker can issue fraudulent certificates that those clients will accept as legitimate. This weakness undermines the certificate trust chain and enables downstream impersonation or man-in-the-middle scenarios against trusting endpoints. The issue is categorized under [CWE-538] (Insertion of Sensitive Information into Externally-Accessible File or Directory) and was published by NVD on 2026-06-10.

Critical Impact

Exposure of a device CA root certificate enables fraudulent certificate issuance and breaks the trust chain for any client that trusts the affected CA.

Affected Products

• Dahua products covered by advisory DHCC-SA-202606-001
• Specific models and firmware versions are enumerated in the vendor advisory
• Refer to the Dahua Security Advisory DHCC-SA-202606-001 for the authoritative product list

Discovery Timeline

• 2026-06-10 - CVE-2026-29114 published to NVD
• 2026-06-10 - Last updated in NVD database

Technical Details for CVE-2026-29114

Vulnerability Analysis

The vulnerability allows a network-positioned attacker to retrieve the CA root certificate stored on affected Dahua devices. The CA root certificate is intended to anchor trust for device-issued certificates. When that root is exposed outside the device, the secrecy assumption that underpins the trust chain no longer holds. An attacker who obtains the root certificate, together with conditions that grant access to corresponding signing material or trust placement on clients, can forge certificates that downstream clients accept as valid.

The attack does not target the cryptographic algorithm itself. It targets the operational boundary that should keep CA material confined to the device. Exploitation requires network reachability and some user interaction, and the resulting confidentiality and integrity impact is limited in scope according to the published CVSS 4.0 vector.

Root Cause

The root cause is improper exposure of sensitive material classified under [CWE-538]. The affected Dahua firmware permits retrieval of the CA root certificate through an externally accessible interface rather than restricting it to authorized device-internal use. Vendor remediation details are documented in the Dahua Security Advisory DHCC-SA-202606-001.

Attack Vector

The attack vector is network-based. An attacker interacts with the device interface that exposes the CA root certificate and retrieves it. If that CA is also installed and trusted on client systems in the environment, the attacker can sign certificates that those clients will trust without warning. This enables impersonation of services protected by the CA and supports man-in-the-middle interception of TLS sessions secured by certificates rooted in the exposed CA.

No public proof-of-concept exploit is referenced in the available CVE data, and the vulnerability is not listed in the CISA Known Exploited Vulnerabilities catalog. Refer to the vendor advisory for technical details on the affected interface.

Detection Methods for CVE-2026-29114

Indicators of Compromise

• Unexpected outbound retrieval of certificate files from Dahua device management interfaces
• Presence of certificates in the environment signed by a Dahua device CA but used outside the device's intended scope
• Client systems trusting a Dahua-issued CA root that was not centrally provisioned

Detection Strategies

• Inventory all client systems that have a Dahua device CA installed in their trust store and validate whether that trust is required
• Audit network traffic to Dahua device endpoints for access patterns associated with certificate retrieval
• Compare certificates issued by the exposed CA against an authoritative issuance log to identify unexpected certificates

Monitoring Recommendations

• Monitor TLS sessions in the environment for certificates chaining to the affected Dahua CA, particularly on hosts that are not device peers
• Alert on additions or modifications to client trust stores referencing Dahua-issued root certificates
• Forward device access logs and TLS handshake metadata to a central analytics platform for correlation

How to Mitigate CVE-2026-29114

Immediate Actions Required

• Identify all Dahua devices in the environment and cross-reference them against the models listed in DHCC-SA-202606-001
• Remove any Dahua device CA root certificate from client trust stores unless explicitly required
• Restrict network access to Dahua device management interfaces to trusted administrative networks

Patch Information

Dahua has published advisory DHCC-SA-202606-001 covering the affected products and corresponding fixes. Apply firmware updates as listed in the Dahua Security Advisory DHCC-SA-202606-001. After patching, rotate any certificates that chain to the previously exposed CA and reissue device certificates from a fresh root.

Workarounds

• Segment Dahua devices on a dedicated management VLAN that is not reachable from general user networks
• Avoid installing Dahua device CA root certificates in enterprise client trust stores
• Terminate TLS for device communications at a controlled reverse proxy using an enterprise-managed CA