CVE-2021-27777

Q: How do I fix CVE-2021-27777?

Upgrade unica to 12.1.1 or later.

Q: Is CVE-2021-27777 being actively exploited?

Not that we know of. CVE-2021-27777 is not in the CISA Known Exploited Vulnerabilities catalog. Its EPSS score of 0.81% is the estimated probability that it will be exploited in the next 30 days. That is higher than 54% of all scored CVEs.

Q: How severe is CVE-2021-27777?

CVE-2021-27777 has a CVSS v3 base score of 7.5, rated high. CVSS rates the technical impact if the vulnerability is exploited, not how likely that is, so weigh it alongside the exploit-prediction score when you decide what to patch first.

Q: What does CVE-2021-27777 affect?

Published advisories record a fix for unica (NVD). Only products with a sourced advisory are listed, so treat this as what we can cite rather than a complete inventory.

HIGH

7.5

CVSS v3

NVD

Description

XML External Entity (XXE) injection vulnerabilities occur when poorly configured XML parsers process user supplied input without sufficient validation. Attackers can exploit this vulnerability to manipulate XML content and inject malicious external entity references.

CWE-91 CWE-611XML External Entity (XXE)

How to fix

Remediation Available

unicaNVD

Affected:< 12.1.1Fixed in:12.1.1CVE-2021-27777derived from NVD

TridentStack Control can deploy fixes like this automatically across your Windows, macOS, and Linux fleet. See how it works

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredNone

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityNone

IntegrityHigh

AvailabilityNone

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

Exploit Intelligence

0.81%probability of exploitation in 30 days

54thpercentile

Moderate risk: more likely to be exploited than 54% of all known CVEs.

References

Vendor Advisory1

support.hcltechsw.com

Related Vulnerabilities

Other CWE-91 vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2020-0646	Critical	9.8	99%	KEV	-
CVE-2023-27253	High	8.8	90%	-	-
CVE-2023-46214	High	8.0	89%	-	Fix
CVE-2024-53675	High	7.3	84%	-	Fix
CVE-2024-53674	High	7.3	47%	-	Fix
CVE-2023-43187	Critical	9.8	45%	-	Fix

Common questions

How do I fix CVE-2021-27777?

Upgrade unica to 12.1.1 or later.

Is CVE-2021-27777 being actively exploited?

Not that we know of. CVE-2021-27777 is not in the CISA Known Exploited Vulnerabilities catalog. Its EPSS score of 0.81% is the estimated probability that it will be exploited in the next 30 days. That is higher than 54% of all scored CVEs.

How severe is CVE-2021-27777?

CVE-2021-27777 has a CVSS v3 base score of 7.5, rated high. CVSS rates the technical impact if the vulnerability is exploited, not how likely that is, so weigh it alongside the exploit-prediction score when you decide what to patch first.

What does CVE-2021-27777 affect?

Published advisories record a fix for unica (NVD). Only products with a sourced advisory are listed, so treat this as what we can cite rather than a complete inventory.

Embed a live status badge for CVE-2021-27777

Markdown

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2024-11-21.