Oracle Mobile Field Service: Privilege escalation via network access over HTTPS
Summary
Oracle Mobile Field Service in Oracle E-Business Suite versions 12.2.3 through 12.2.15 contains a flaw in the Internal Operations component. An attacker with a low-privileged account and network access over HTTPS can compromise the product, according to the CVE record. The CVSS base score is 8.8 (high), and the CVE record states that a successful attack can lead to takeover of the product. Oracle lists the flaw as part of its October 2026 Critical Patch Update.
Affected
- Oracle Mobile Field Service in Oracle E-Business Suite 12.2.3 through 12.2.15
- Component: Internal Operations
Fixed in
- Unknown. Oracle's October 2026 Critical Patch Update (KA923 on My Oracle Support) is the reference; the exact patch for CVE-2026-101653 has not been confirmed in the sources.
Workaround
- No vendor workaround found.
- Restrict access to the service to VPN or known networks and remove any internet-facing access.
Exploitation
- Exploited in the wild: none found.
- Public proof of concept: none found.
- CISA SSVC: Exploitation none, Automatable no, Technical Impact total.
- EPSS: about 0.43% at the time of the snapshot.
Our recommendation
- Confirm whether any EBS 12.2.3 to 12.2.15 instance with Mobile Field Service is in use.
- Remove internet-facing access to the service or restrict it to VPN or known networks.
- Apply the October 2026 CPU from KA923 after confirming the exact patch for CVE-2026-101653 in Oracle's advisory. Patch related October 2026 Mobile Field Service entries together.
- Review low-privilege accounts for the service and remove unused ones.
- Monitor access logs for unusual activity until patched.
Public exploits
PoC-in-GitHub, Metasploit and Exploit-DB list nothing for this CVE.
Research sources
- Oracle Critical Patch Update Advisory October 2026 www.oracle.com
- NVD record via Vulners vulners.com
- CVE record via Vulners vulners.com
- Oracle E-Business Suite October 2026 CPU checker blog blogs.oracle.com
Researched and written up in English and German by an AI (Claude by Anthropic) based on NVD, CISA, EPSS and the sources listed. The vendor information is authoritative. Researched on 31 Oct 2026, 15:22.
Original description (NVD)
Vulnerability in the Oracle Mobile Field Service product of Oracle E-Business Suite (component: Internal Operations). Supported versions that are affected are 12.2.3-12.2.15. Easily exploitable vulnerability allows low privileged attacker with network access via HTTPS to compromise Oracle Mobile Field Service. Successful attacks of this vulnerability can result in takeover of Oracle Mobile Field Service. CVSS 3.1 Base Score 8.8 (Confidentiality, Integrity and Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H).
NVD references (1)
Sources
The tracker combines official, freely usable data sources – updated continuously:
- NVD (NIST) – CVEs, rating (CVSS), affected products
- CISA KEV – vulnerabilities confirmed by CISA as actively exploited
- CISA Vulnrichment – CISA assessment (SSVC) in the official CVE record
- FIRST EPSS – probability of exploitation
- Microsoft MSRC – Patch Tuesday: vulnerabilities, severity, updates
- PoC-in-GitHub – public proof-of-concept repositories
- Metasploit (Rapid7) – modules of the Metasploit Framework
- Exploit-DB (OffSec) – archive of public exploits (links only)
- Patch days: official vendor pages (linked per vendor) (Vendor patch days)
This product uses data from the NVD API but is not endorsed or certified by the NVD. EPSS data © FIRST.org.
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