Is CVE-2026-21997 actively exploited?

No active exploitation of CVE-2026-21997 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2026-21997 be exploited remotely?

Yes. CVE-2026-21997 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2026-21997?

CVE-2026-21997 has a CVSS score of 8.5 (HIGH).

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HIGH

CVE-2026-21997

Published: April 21, 2026· Updated: Apr 22, 2026

8.5

CVSS v3.1

EPSS:0.03%probability of exploitation in 30 daysPercentile:7.8th

Official Description

Vulnerability in the Oracle Life Sciences Empirica Signal product of Oracle Life Science Applications (component: Common Core). Supported versions that are affected are 9.2.1-9.2.3. Easily exploitable vulnerability allows low privileged attacker with network access via HTTP to compromise Oracle Life Sciences Empirica Signal. While the vulnerability is in Oracle Life Sciences Empirica Signal, attacks may significantly impact additional products (scope change). Successful attacks of this vulnerability can result in unauthorized creation, deletion or modification access to critical data or all Oracle Life Sciences Empirica Signal accessible data as well as unauthorized read access to a subset of Oracle Life Sciences Empirica Signal accessible data. CVSS 3.1 Base Score 8.5 (Confidentiality and Integrity impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:H/A:N).

NVD Source

Technical Analysis

CVE-2026-21997 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

Exploitation requires low privileges, which limits the exposure to scenarios where an attacker has already gained initial access.

A successful exploit results in full integrity compromise (data manipulation), with a CVSS base score of 8.5.

The vulnerability has a "Changed" scope, meaning successful exploitation can impact components beyond the vulnerable component itself — such as the host operating system or adjacent services.