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CVE Record

CVE-2021-29665: IBM Security Verify Access 20.07 is vulnerable to a stack based buffer overflow, caused by improper bounds...

IBM Security Verify Access 20.07 is vulnerable to a stack based buffer overflow, caused by improper bounds checking which could allow a local attacker to execute arbitrary code on the system with elevated privileges.

CriticalCVSS 9Not KEV-listedUpdated
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Glexia's TakeAutomated analysiscritical

Security readout for executives and security teams

Plain-English summary

IBM Security Verify Access 20.07 has a critical memory-safety flaw. The supplied description says improper bounds checking can let a local attacker run arbitrary code with elevated privileges, turning initial access into deeper system control.

Executive priority

Treat as urgent for any environment running IBM Security Verify Access 20.07. The business risk is elevated privilege code execution on an identity security component, but exploitation evidence is not established in the provided sources.

Technical view

CVE-2021-29665 is described as a stack-based buffer overflow in IBM Security Verify Access 20.07. The CVSS data rates it 9.0 and critical, with high confidentiality and integrity impact. The bundle contains a local-attacker description but a network attack vector, so exposure details should be confirmed against IBM guidance.

Likely exposure

Exposure is limited in the supplied sources to IBM Security Verify Access version 20.07. Organizations without that version identified should treat exposure as unconfirmed until asset inventory and vendor advisory checks are complete.

Exploitation context

The bundle does not show CISA KEV listing or cited evidence of active exploitation. The CVSS exploit-code maturity value is unproven, but impact is high if an attacker can reach the vulnerable condition.

Researcher notes

Do not assume broader product or version impact beyond 20.07 from this bundle. The local attacker wording conflicts with the supplied AV:N vector, so validation should prioritize IBM advisory details and exact deployment context.

Mitigation direction

  • Identify all IBM Security Verify Access deployments and versions.
  • Review IBM advisory 6457315 for the official fix or workaround.
  • Apply IBM-supported remediation for affected 20.07 systems.
  • Restrict local access to affected systems until remediation is complete.
  • Monitor IBM X-Force entry 199399 for updated guidance.

Validation and detection

  • Confirm whether IBM Security Verify Access 20.07 exists in production or staging.
  • Compare installed build details against IBM advisory applicability.
  • Verify remediation status using vendor-supported version or patch evidence.
  • Review security logs for unexpected crashes or privileged process behavior.
  • Document any uncertainty caused by the local-versus-network vector discrepancy.
Prepared
Confidence
medium
Sources
4

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.

description · low confidence lookup

Execution behavior lookup

The CVE wording references code or command execution, so execution technique review may help defensive triage. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.

Open ATT&CK lookup
cve · low confidence lookup

CVE-2021-29665 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 (3.0)
Known Exploited
No
Published

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

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
3Source 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
9CVSS 3.0CriticalCVSS:3.0/A:H/I:H/UI:N/AV:N/PR:N/C:H/S:C/AC:H/RC:C/E:U/RL:O2.26Primary CVE score

Vulnerability scoring details

Base CVSS 3.0 score

9Critical
CVSS 3.0 vector shape for CVE-2021-29665Attack VectorAttack ComplexityPrivileges RequiredUser InteractionScopeConfidentiality ImpactIntegrity ImpactAvailability Impact

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

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
IBMSecurity Verify Access20.07Listed
Weakness

CWE details

No CWE listed

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