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CVE Record

CVE-2021-27779: A Security Misconfiguration vulnerability affects HCL VersionVault Express

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

CriticalCVSS 9.1Not KEV-listedUpdated
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Glexia's TakeAutomated analysiscritical

Security readout for executives and security teams

Plain-English summary

HCL VersionVault Express 2.0.x can expose sensitive information that could let an attacker pretend to be the server or listen to communications with it. That creates a serious confidentiality and trust risk for organizations using this source-control platform.

Executive priority

Treat as urgent for any business using HCL VersionVault Express 2.0.x. The issue threatens trusted communications and could undermine source-code confidentiality and server authenticity, but the source bundle does not prove active exploitation.

Technical view

CVE-2021-27779 is a critical security misconfiguration in HCL VersionVault Express 2.0.x. The CVSS 3.1 score is 9.1, with network attack vector, no authentication, no user interaction, and high confidentiality and integrity impact. The source identifies CWE-311.

Likely exposure

Exposure is limited to organizations running HCL VersionVault Express 2.0.x, especially if the service is reachable from untrusted networks. The provided sources do not identify other HCL VersionVault editions or versions as affected.

Exploitation context

The source bundle does not show CISA KEV listing or confirmed active exploitation. The risk remains high because the issue is network-reachable, unauthenticated, low-complexity, and could enable server impersonation or eavesdropping.

Researcher notes

The public bundle is sparse: it states affected product/version, CVSS, CWE-311, and impact, but does not include detailed root cause, patch version, or exploitation evidence. Avoid expanding affected scope beyond VersionVault Express 2.0.x.

Mitigation direction

  • Identify all HCL VersionVault Express deployments and versions.
  • Review HCL KB0098165 for vendor-approved fixes or mitigations.
  • Limit VersionVault Express access to trusted networks only.
  • After remediation, reassess exposed sensitive communication material per vendor guidance.

Validation and detection

  • Confirm whether any deployed VersionVault Express instance is version 2.0.x.
  • Check whether affected services are reachable from untrusted networks.
  • Review configurations against HCL KB0098165 guidance.
  • Document whether compensating network controls are currently enforced.
Prepared
Confidence
medium
Sources
3

Public sources used

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

Potential ATT&CK relevance

Conservative CVE-to-ATT&CK context

These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.

ATT&CK lookup starting points

Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.

cwe · low confidence lookup

CWE-311: Exact CWE lookup

Use the exact CWE identifier as the starting point before reviewing related ATT&CK behavior. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.

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cve · low confidence lookup

CVE-2021-27779 mapping review

Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.

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Vulnerability profileCVE Program record
Severity
Critical
CVSS
9.1 (3.1)
Known Exploited
No
Published

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

Official CVE source material

CNA and ADP enrichment extracted from CVE v5

These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.

1CVSS vectors
0Timeline events
0ADP providers
2Source links

CVSS vector scores

1 official score

We collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.

ScoreVersionSeverityVectorExploitImpactSource
9.1CVSS 3.1CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N3.95.2Primary CVE score

Vulnerability scoring details

Base CVSS 3.1 score

9.1Critical
CVSS 3.1 vector shape for CVE-2021-27779Attack VectorAttack ComplexityPrivileges RequiredUser InteractionScopeConfidentiality ImpactIntegrity ImpactAvailability Impact

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

Attack Vector
NetworkAdjacentLocalPhysical
Attack Complexity
LowHigh
Privileges Required
NoneLowHigh
User Interaction
NoneRequired
Scope
ChangedUnchanged
Confidentiality Impact
HighLowNone
Integrity Impact
HighLowNone
Availability Impact
HighLowNone

Source materials

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
HCL SoftwareHCL VersionVault Express2.0.xListed
Weakness

CWE details

CWE-311

CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.