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CVE Record

CVE-2021-29725: IBM Secure External Authentication Server 2.4.3.2, 6.0.1, 6.0.2 and IBM Secure Proxy 3.4.3.2, 6.0.1, 6.0.2...

IBM Secure External Authentication Server 2.4.3.2, 6.0.1, 6.0.2 and IBM Secure Proxy 3.4.3.2, 6.0.1, 6.0.2 could allow a remote user to consume resources causing a denial of service due to a resource leak.

HighCVSS 7.5Not KEV-listedUpdated
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Glexia's TakeAutomated analysishigh

Security readout for executives and security teams

Plain-English summary

This vulnerability can let an unauthenticated remote user exhaust resources in affected IBM Secure External Authentication Server and IBM Secure Proxy versions, causing a denial of service. The business risk is service disruption, not data theft, based on the supplied sources.

Executive priority

High priority for affected deployments because disruption could affect authentication or proxy services. No source indicates data compromise or active exploitation, so urgency should be driven by exposure and service criticality.

Technical view

CVE-2021-29725 is a network-reachable resource leak in listed IBM Secure External Authentication Server and IBM Secure Proxy versions. CVSS 3.0 is 7.5: low complexity, no privileges, no user interaction, high availability impact, with no confidentiality or integrity impact stated.

Likely exposure

Exposure is limited to organizations running the listed IBM products and versions: Secure External Authentication Server 2.4.3.2, 6.0.1, 6.0.2; Secure Proxy 3.4.3.2, 6.0.1, 6.0.2.

Exploitation context

The bundle does not show CISA KEV listing or cited evidence of active exploitation. CVSS exploit maturity is marked unproven, so treat this as a credible availability risk without claiming observed exploitation.

Researcher notes

The provided data identifies a resource leak DoS with no CWE listed. The bundle does not include technical root cause detail, proof-of-concept information, or exact fixed version names beyond IBM advisory references.

Mitigation direction

  • Review IBM advisory guidance for the affected product and version.
  • Apply IBM-provided fixes or upgrades identified in the advisory.
  • Prioritize internet-facing or business-critical deployments first.
  • Monitor resource usage and service availability until remediation is complete.
  • Contact IBM support if advisory remediation cannot be applied promptly.

Validation and detection

  • Inventory IBM Secure External Authentication Server deployments and versions.
  • Inventory IBM Secure Proxy deployments and versions.
  • Compare installed versions against the affected version list.
  • Confirm IBM advisory remediation has been applied where affected.
  • Review monitoring for unexplained resource growth or service instability.
Prepared
Confidence
high
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-2021-29725 mapping review

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Vulnerability profileCVE Program record
Severity
High
CVSS
7.5 (3.0)
Known Exploited
No
Published

Vector: CVSS:3.0/AC:L/UI:N/PR:N/AV:N/S:U/I:N/C:N/A:H/RL:O/RC:C/E:U

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
7.5CVSS 3.0HighCVSS:3.0/AC:L/UI:N/PR:N/AV:N/S:U/I:N/C:N/A:H/RL:O/RC:C/E:U3.93.6Primary CVE score

Vulnerability scoring details

Base CVSS 3.0 score

7.5High
CVSS 3.0 vector shape for CVE-2021-29725Attack VectorAttack ComplexityPrivileges RequiredUser InteractionScopeConfidentiality ImpactIntegrity ImpactAvailability Impact

Vector: CVSS:3.0/AC:L/UI:N/PR:N/AV:N/S:U/I:N/C:N/A:H/RL:O/RC:C/E:U

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
IBMSecure External Authentication Server2.4.3.2, 6.0.1, 6.0.2Listed
IBMSecure Proxy6.0.1, 3.4.3.2, 6.0.2Listed
Weakness

CWE details

No CWE listed

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