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CVE Record

CVE-2020-10511: HGiga C&Cmail - Broken Access Control

HGiga C&Cmail CCMAILQ before olln-base-6.0-418.i386.rpm and CCMAILN before olln-base-5.0-418.i386.rpm contains insecure configurations. Attackers can exploit these flaws to access unauthorized functionality via a crafted URL.

CriticalCVSS 9.8Not KEV-listedUpdated
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Glexia's TakeAutomated analysiscritical

Security readout for executives and security teams

Plain-English summary

CVE-2020-10511 is a broken access-control issue in HGiga C&Cmail. A remote unauthenticated attacker could use crafted URLs to reach functionality they should not be allowed to access. The source bundle rates it CVSS 9.8 critical, with potential confidentiality, integrity, and availability impact. No source here confirms active exploitation.

Executive priority

Treat this as urgent for any organization running HGiga C&Cmail because the vulnerability is critical, remotely reachable, and requires no authentication. Prioritize exposed mail infrastructure first. If the product is not present, document that finding and close the exposure path.

Technical view

Affected products are HGiga C&Cmail CCMAILQ before olln-base-6.0-418.i386.rpm and CCMAILN before olln-base-5.0-418.i386.rpm. The issue is described as insecure configuration enabling unauthorized functionality through crafted URLs. CVSS v3.1 is AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H. No CWE or CPE data is provided in the bundle.

Likely exposure

Exposure is most likely where HGiga C&Cmail CCMAILQ or CCMAILN web-accessible services are deployed, especially if reachable from the internet. The bundle does not identify default ports, vulnerable endpoints, or specific deployment patterns, so asset inventory is required.

Exploitation context

The provided sources support remote, unauthenticated access-control bypass potential. CISA KEV is false in the bundle, and no cited source here states active exploitation. Public references include an advisory and researcher/vendor confirmations, but detailed exploitation evidence is not provided.

Researcher notes

Technical detail is limited in the provided bundle: no CWE, no CPEs, no endpoint list, and no confirmed exploitation status. Analysis should stay anchored to version validation, reachability, and log review rather than assuming specific affected paths or exploit behavior.

Mitigation direction

  • Upgrade CCMAILQ to olln-base-6.0-418.i386.rpm or later where applicable.
  • Upgrade CCMAILN to olln-base-5.0-418.i386.rpm or later where applicable.
  • Check HGiga or national CERT guidance for product-specific remediation instructions.
  • Restrict external access to C&Cmail administrative or web interfaces where business allows.
  • Monitor vendor advisories for clarifications on affected builds and compensating controls.

Validation and detection

  • Inventory all HGiga C&Cmail CCMAILQ and CCMAILN installations.
  • Verify installed olln-base package versions against the affected version thresholds.
  • Confirm whether any C&Cmail interfaces are internet-accessible.
  • Review access logs for unusual requests to restricted or administrative functions.
  • Track remediation evidence with package versions and exposure status.
Prepared
Confidence
medium
Sources
5

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

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CVE-2020-10511 mapping review

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Vulnerability profileCVE Program record
Severity
Critical
CVSS
9.8 (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:H

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
4Source 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
9.8CVSS 3.1CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H3.95.9Primary CVE score

Vulnerability scoring details

Base CVSS 3.1 score

9.8Critical
CVSS 3.1 vector shape for CVE-2020-10511Attack 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:H

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
HGigaC&CmailCCMAILQ before olln-base-6.0-418.i386.rpm, CCMAILN before olln-base-5.0-418.i386.rpmListed
Weakness

CWE details

No CWE listed

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