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PatchSiren cyber security CVE debrief

CVE-2026-70688 Oracle Corporation CVE debrief

The CVE-2026-70688 vulnerability is classified under Oracle Essbase, specifically within the Calculator component. This vulnerability is known to be easily exploitable, allowing a low-privileged attacker with network access via HTTP to compromise Oracle Essbase, potentially leading to a full takeover of the system. The affected version is 21.8.1.0.0. The vulnerability has a high impact on confidentiality, integrity, and availability, reflected in its CVSS score of 8.8. Users and administrators should be aware of this vulnerability and take immediate action to mitigate risks, including applying security patches and restricting network access.

Vendor
Oracle Corporation
Product
Oracle Essbase
CVSS
HIGH 8.8
CISA KEV
Not listed in stored evidence
Original CVE published
2026-08-18
Original CVE updated
2026-09-03
Advisory published
2026-08-18
Advisory updated
2026-09-03

Who should care

Users of Oracle Essbase 21.8.1.0.0, security teams, vulnerability management teams, and operators of affected deployments should be aware of this vulnerability and take necessary actions to mitigate the risk. This includes applying security patches, restricting network access, and monitoring logs for suspicious activity. Additionally, reviewing compensating controls for exposed systems and tracking exceptions during remediation efforts are recommended.

Technical summary

The vulnerability in Oracle Essbase (component: Calculator) allows a low-privileged attacker with network access via HTTP to compromise Oracle Essbase, potentially leading to a full takeover. The supported and affected version is 21.8.1.0.0. The CVSS score is 8.8 with a vector of CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H. Successful attacks can result in the takeover of Oracle Essbase. It is crucial for users of Oracle Essbase 21.8.1.0.0 to apply security patches and implement defensive measures such as restricting network access and monitoring logs for suspicious activity.

Defensive priority

Oracle Essbase 21.8.1.0.0 vulnerable to takeover via HTTP; apply vendor remediation.

Recommended defensive actions

  • Apply Oracle Essbase 21.8.1.0.0 security patch
  • Restrict network access to Oracle Essbase
  • Monitor Oracle Essbase logs for suspicious activity
  • Review compensating controls for exposed systems
  • Check relevant monitoring, detection, and logs for exposed assets
  • Track exceptions and retest remediated assets
  • Confirm whether affected product deployments exist in managed environments

Evidence notes

Vendor: Oracle; Product: Essbase; Version: 21.8.1.0.0; Component: Calculator; CVSS Score: 8.8; CVSS Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H. The vulnerability allows low privileged attackers with network access via HTTP to compromise Oracle Essbase, potentially leading to takeover. Evidence is based on official CVE and NVD sources. Defenders should verify affected deployments, review vendor guidance, and monitor for suspicious activity.

Sources and references

Verified primary and authoritative sources

  • CVE-2026-70688 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-70688

    CVE Program - Official CVE Program record with source-provided CVE metadata.

  • CVE-2026-70688 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-70688

    NIST National Vulnerability Database - Official NIST NVD detail page and source-specific vulnerability assessment.

Supplemental references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.