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CVE-2021-2156

25
FAUCET Score

CVE-2021-2156 is a high-severity vulnerability affecting Oracle Customers Online in Oracle E-Business Suite versions 12.1.3 and 12.2.3-12.2.10. This easily exploitable flaw allows a low-privileged attacker with network access via HTTP to gain unauthorized creation, deletion, or modification access to critical data, as well as complete access to all Oracle Customers Online accessible data. With a CVSS 3.1 Base Score of 8.1, it poses significant confidentiality and integrity risks. Currently, there is no known active exploitation, public exploit code, or significant community discussion surrounding this vulnerability.

Impacted Technologies

VendorProductVersion(s)CPE
>= 12.2.3, <= 12.2.10CPE matchmatch criteria
cpe:2.3:a:oracle:customers_online:*:*:*:*:*:*:*:*
12.1.3CPE matchmatch criteria
cpe:2.3:a:oracle:customers_online:12.1.3:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

8.1HIGH

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
NONE
Exploitability Score
2.8
Impact Score
5.2
CvssVersion
3.1

Exploit Intelligence

EPSS Score
1.01%
Probability of exploitation in next 30 days
EPSS Percentile
59.7%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0101 is in the 56th percentile among its peer group of 17,844 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.3 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (1)

oraclepatch availablevia nvd_reference
View patch

References

oracle.com / security-alerts/cpuapr2021.html
PatchVendor Advisory