External risk intelligence

Attacker can take over Oracle Advanced Inbound Telephony systems

CVE advisorySeverity: CRITICAL (CVSS 9.8)

CVE-2026-34275

A serious vulnerability in Oracle Advanced Inbound Telephony lets anyone take over the system without a password over the internet, impacting critical communication services. This needs immediate attention.

4Halo Surface Signal

Missing Authentication

Oracle Advanced Inbound Telephony

12.2.3 to 12.2.15

External exposure likelihood

Halo Surface Signal score for CVE-2026-34275

The vulnerability affects the administration component of an Oracle telephony application, which is described as an exposed network service. Given its role in handling inbound communications, the associated web interface is commonly deployed in a manner that may be internet-accessible, making it more likely to be reached than a standard internal-only management console.

Horizon Alert

Summary of the vulnerability and why it matters

A serious vulnerability exists in Oracle Advanced Inbound Telephony that could allow an attacker to completely take over the system. This issue is critical because it’s easily exploitable over the network without any authentication, potentially impacting the availability and integrity of telephony operations.

  • Attackers can gain full control.
  • Reachable from the internet.
  • Affects core telephony functions.

Attack Path

How an attacker could exploit the issue

An unauthenticated attacker on the network could exploit this flaw in Oracle Advanced Inbound Telephony to gain full control of the product. The vulnerability is in the setup and administration component, allowing for easy takeover.

  • Network access required.
  • Targets HTTP interface.
  • No authentication needed.

Live Threat

Current exploitation, exposure, and threat context

Attackers will likely target this vulnerability due to its critical severity and ease of exploitation. The Oracle Advanced Inbound Telephony product is exposed via HTTP, allowing unauthenticated attackers to achieve complete system takeover. This direct path to compromise makes it an attractive target for immediate weaponization.

  • Unauthenticated network access exploitable.
  • Critical impact: full takeover.
  • Affected Oracle E-Business Suite.

Priority actions

Operational Fix

Recommended remediation, mitigation, and detection steps

Prioritize immediate isolation of Oracle Advanced Inbound Telephony services due to the critical, easily exploitable nature of this vulnerability, which allows for complete takeover via network access. Review logs for any signs of compromise and prepare for emergency patching.

  • Isolate affected Oracle E-Business Suite instances.
  • Apply Oracle's Critical Patch Update.
  • Monitor network traffic for exploit indicators.

Frequently asked questions

What is Oracle Advanced Inbound Telephony?

Oracle Advanced Inbound Telephony is a component within Oracle E-Business Suite responsible for managing inbound telephone communications and related telephony operations for organizations.

What weakness does CVE-2026-34275 represent?

CVE-2026-34275 represents an easily exploitable vulnerability classified as CWE-306, allowing an unauthenticated attacker with network access via HTTP to compromise the affected system.

How can an attacker trigger CVE-2026-34275?

An attacker can exploit this vulnerability by sending network requests via HTTP to the setup and administration component of Oracle Advanced Inbound Telephony, requiring no special privileges or authentication.

What is the relevance of CVE-2026-34275 to Halo Surface Signal?

Halo Surface Signal rates this vulnerability as 'Likely' due to its impact on an Oracle telephony administration component, which is often exposed as a network service and potentially internet-accessible, increasing the likelihood of an attack.

What practical response is recommended for CVE-2026-34275?

Organizations should prioritize isolating Oracle Advanced Inbound Telephony services immediately and prepare for emergency patching by applying Oracle's Critical Patch Update to prevent complete system takeover.

References