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Fencer Intel
high 7.2

CVE-2021-35528 json

Authentication Bypass Vulnerability Vulnerability in Retail Operations Product and Counterparty Settlement and Billing (CSB)

published 4y ago modified 4mo ago also EUVD-2021-22164

cvss
7.2
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.3%
EPSS 0.3% chance of exploitation in 30 days, percentile 17%
public exploits
0
none known

Summary

Improper Access Control vulnerability in the application authentication and authorization of Hitachi Energy Retail Operations, Counterparty Settlement and Billing (CSB) allows an attacker to execute a modified signed Java Applet JAR file. A successful exploitation may lead to data extraction or modification of data inside the application. This issue affects: Hitachi Energy Retail Operations 5.7.3 and prior versions. Hitachi Energy Counterparty Settlement and Billing (CSB) 5.7.3 prior versions.

Patch / fix

  • Hitachi Energy Retail Operations 5.7.3.1
  • Hitachi Energy Counterparty Settlement and Billing (CSB) 5.7.3.1

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Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

cisa ICSA-21-334-05 updated cvss 7.2

Hitachi Energy Retail Operations and CSB Software

  • Hitachi Energy Counterparty Settlement and Billing (CSB) <= 5.7.3 Hitachi Energy Retail Operations <= 5.7.3
    affected: fixed in v5.7.3.1, mitigation “Counterparty Settlement and Billing (CSB) v5.7.3: Upgrade to v5.7.3.1” gcc02.safelinks.protection.outlook.com

From CISA ICS and IT advisories (CSAF, https://github.com/cisagov/CSAF), a U.S. Government work; changed: reduced to products, statuses and remediations. CISA notification · csaf

Exploit prediction

0.26% chance of exploitation in the next 30 days, higher than 17% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by version score vector
CNA 3.1 7.2 CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:N
NVD 3.1 7.1 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
NVD 2.0 3.6 AV:L/AC:L/Au:N/C:P/I:P/A:N

Affected products

  • Hitachi Energy Retail Operations
  • Hitachi Energy Counterparty Settlement and Billing (CSB)

Classification

Weakness

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.