How severe is CVE-2021-27769?

CVE-2021-27769 has a CVSS 3.x base score of 5.3, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity none, and availability none.

Is CVE-2021-27769 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (49th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-27769?

CVE-2021-27769 affects Hcltech Sametime. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-27769?

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

When was CVE-2021-27769 published?

CVE-2021-27769 was published on 2022-05-12 and last updated on 2026-06-17.

CVE-2021-27769

CVE-2021-27769 is a medium-severity vulnerability in Hcltech Sametime with a CVSS 3.x base score of 5.3. 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-472.

Key facts

Severity: Medium (CVSS 3.x base score 5.3)
CVSS v2: 5.0
EPSS exploit prediction: 1% (49th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-472
Affected product: Hcltech Sametime
Published: 2022-05-12
Last modified: 2026-06-17

Description

Information leakage occurs when a website reveals information that could aid an attacker to further exploit the system. This information may or may not be sensitive and does not automatically mean a breach is likely to occur. Overall, any information that could be used for an attack should be limited whenever possible.

Frequently asked questions

What is CVE-2021-27769?: Information leakage occurs when a website reveals information that could aid an attacker to further exploit the system. This information may or may not be sensitive and does not automatically mean a breach is likely to occur. Overall, any information that could be used for an attack should be limited whenever possible.
How severe is CVE-2021-27769?: CVE-2021-27769 has a CVSS 3.x base score of 5.3, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity none, and availability none.
Is CVE-2021-27769 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (49th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-27769?: CVE-2021-27769 affects Hcltech Sametime. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-27769?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2021-27769 published?: CVE-2021-27769 was published on 2022-05-12 and last updated on 2026-06-17.

References

https://support.hcltechsw.com/csm?id=kb_article&sysparm_article=KB0097430

Affected products (1)

cpe:2.3:a:hcltech:sametime:11.6:*:*:*:*:*:*:*

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