How severe is CVE-2021-36100?

CVE-2021-36100 has a CVSS 3.x base score of 6.4, rated medium severity. It is exploitable over network with high attack complexity, requires high privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2021-36100 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (67th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-36100?

CVE-2021-36100 primarily affects Otrs. In total, 3 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2021-36100?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2021-36100 published?

CVE-2021-36100 was published on 2022-03-21 and last updated on 2026-06-17.

CVE-2021-36100

CVE-2021-36100 is a medium-severity vulnerability in Otrs with a CVSS 3.x base score of 6.4. 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-78.

Key facts

Severity: Medium (CVSS 3.x base score 6.4)
CVSS v2: 9.0
EPSS exploit prediction: 1% (67th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-78
Affected product: Otrs
Published: 2022-03-21
Last modified: 2026-06-17

Description

Specially crafted string in OTRS system configuration can allow the execution of any system command.

Frequently asked questions

What is CVE-2021-36100?: Specially crafted string in OTRS system configuration can allow the execution of any system command.
How severe is CVE-2021-36100?: CVE-2021-36100 has a CVSS 3.x base score of 6.4, rated medium severity. It is exploitable over network with high attack complexity, requires high privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2021-36100 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (67th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-36100?: CVE-2021-36100 primarily affects Otrs. In total, 3 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2021-36100?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2021-36100 published?: CVE-2021-36100 was published on 2022-03-21 and last updated on 2026-06-17.

References

Affected products (3)

cpe:2.3:a:otrs:otrs:*:*:*:*:*:*:*:*
cpe:2.3:a:otrs:otrs_itsm:*:*:*:*:*:*:*:*
cpe:2.3:a:otrs:otrs_storm:*:*:*:*:*:*:*:*

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