How severe is CVE-2021-27779?

CVE-2021-27779 has a CVSS 3.x base score of 9.1, 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 none.

Is CVE-2021-27779 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (42nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-27779?

CVE-2021-27779 affects Hcltech Versionvault Express. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-27779?

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-2021-27779 published?

CVE-2021-27779 was published on 2022-05-25 and last updated on 2026-06-17.

CVE-2021-27779

CVE-2021-27779 is a critical-severity vulnerability in Hcltech Versionvault Express with a CVSS 3.x base score of 9.1. 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-311.

Key facts

Severity: Critical (CVSS 3.x base score 9.1)
CVSS v2: 6.4
EPSS exploit prediction: 1% (42nd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-311
Affected product: Hcltech Versionvault Express
Published: 2022-05-25
Last modified: 2026-06-17

Description

VersionVault Express exposes sensitive information that an attacker can use to impersonate the server or eavesdrop on communications with the server.

Frequently asked questions

What is CVE-2021-27779?: VersionVault Express exposes sensitive information that an attacker can use to impersonate the server or eavesdrop on communications with the server.
How severe is CVE-2021-27779?: CVE-2021-27779 has a CVSS 3.x base score of 9.1, 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 none.
Is CVE-2021-27779 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (42nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-27779?: CVE-2021-27779 affects Hcltech Versionvault Express. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-27779?: 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-2021-27779 published?: CVE-2021-27779 was published on 2022-05-25 and last updated on 2026-06-17.

References

https://support.hcltechsw.com/csm?id=kb_article&sysparm_article=KB0098165

Affected products (1)

cpe:2.3:a:hcltech:versionvault_express:2.0.1:*:*:*:*:*:*:*

More vulnerabilities in Hcltech Versionvault Express

CVE-2022-27563 — High (CVSS 7.5): An unauthenticated user can overload a part of HCL VersionVault Express and cause a denial of service.
CVE-2022-27560 — Medium (CVSS 6.0): HCL VersionVault Express exposes administrator credentials.

All CVEs affecting Hcltech Versionvault Express →

Other CWE-311 (Missing Encryption of Sensitive Data) vulnerabilities

CVE-2023-6339 — Critical (CVSS 10.0): Google Nest WiFi Pro root code-execution & user-data compromise
CVE-2023-4420 — Critical (CVSS 9.8): A remote unprivileged attacker can intercept the communication via e.g. Man-In-The-Middle, due to the absence of…
CVE-2023-0750 — Critical (CVSS 9.8): Yellobrik PEC-1864 implements authentication checks via javascript in the frontend interface. When the device can be…
CVE-2020-15331 — Critical (CVSS 9.8): Zyxel CloudCNM SecuManager 3.1.0 and 3.1.1 has a hardcoded OAUTH_SECRET_KEY in /opt/axess/etc/default/axess.
CVE-2019-3431 — Critical (CVSS 9.8): All versions up to V4.01.01.02 of ZTE ZXCLOUD GoldenData VAP product have encryption problems vulnerability. Attackers…
CVE-2019-12924 — Critical (CVSS 9.8): MailEnable Enterprise Premium 10.23 was vulnerable to XML External Entity Injection (XXE) attacks that could be…

Browse all CWE-311 (Missing Encryption of Sensitive Data) vulnerabilities →