How severe is CVE-2021-33583?

CVE-2021-33583 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2021-33583 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (65th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-33583?

CVE-2021-33583 affects Reiner-sct Timecard. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-33583?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

When was CVE-2021-33583 published?

CVE-2021-33583 was published on 2021-09-30 and last updated on 2026-06-17.

CVE-2021-33583

CVE-2021-33583 is a critical-severity vulnerability in Reiner-sct Timecard with a CVSS 3.x base score of 9.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-798.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
CVSS v2: 10.0
EPSS exploit prediction: 1% (65th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-798
Affected product: Reiner-sct Timecard
Published: 2021-09-30
Last modified: 2026-06-17

Description

REINER timeCard 6.05.07 installs a Microsoft SQL Server with an sa password that is hardcoded in the TCServer.jar file.

Frequently asked questions

What is CVE-2021-33583?: REINER timeCard 6.05.07 installs a Microsoft SQL Server with an sa password that is hardcoded in the TCServer.jar file.
How severe is CVE-2021-33583?: CVE-2021-33583 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2021-33583 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (65th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-33583?: CVE-2021-33583 affects Reiner-sct Timecard. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-33583?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2021-33583 published?: CVE-2021-33583 was published on 2021-09-30 and last updated on 2026-06-17.

References

https://www.compass-security.com/fileadmin/Research/Advisories/2021-12_CSNC-2021-012_timeCard_Hardcoded_Credentials.txt

Affected products (1)

cpe:2.3:a:reiner-sct:timecard:6.05.07:*:*:*:*:*:*:*

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