LiveActive security incident?Get immediate response
CVE Record

CVE-2019-4036: IBM Security Access Manager Appliance could allow unauthenticated attacker to cause a denial of service in...

IBM Security Access Manager Appliance could allow unauthenticated attacker to cause a denial of service in the reverse proxy component. IBM X-Force ID: 156159.

HighCVSS 7.5Not KEV-listedUpdated
Discuss exposureBack to CVEs
Glexia's TakeAutomated analysishigh

Security readout for executives and security teams

Plain-English summary

CVE-2019-4036 affects IBM Security Access Manager Appliance. An unauthenticated remote attacker could disrupt the reverse proxy component, potentially interrupting authentication or access-management services. The business risk is service availability, not data theft or integrity loss based on the provided CVSS vector.

Executive priority

Treat as high priority when IBM Security Access Manager reverse proxy supports business-critical access or is externally reachable. Prioritize remediation through IBM guidance, but avoid assuming breach impact: the provided evidence points to availability disruption only.

Technical view

The CVSS 3.0 vector is AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H, scored 7.5 high. The issue is a denial of service in the reverse proxy component. The bundle does not provide affected version ranges, root cause, or fixed build numbers.

Likely exposure

Exposure is likely limited to organizations running IBM Security Access Manager Appliance with the reverse proxy component deployed. Risk is higher where that component is reachable from untrusted networks or supports critical SSO, access gateway, or application front-door traffic.

Exploitation context

The CVSS vector indicates remote, unauthenticated, low-complexity denial of service potential. The source bundle marks KEV as false and provides no cited evidence of active exploitation. IBM X-Force lists exploit maturity as unproven in the supplied vector.

Researcher notes

Evidence is sparse. The bundle identifies the affected product and component but omits versions, technical root cause, and precise fixed releases. Validation should focus on asset inventory, component exposure, and IBM advisory correlation rather than speculative exploit testing.

Mitigation direction

  • Check IBM advisory for affected versions and official remediation.
  • Apply IBM-published fixes or supported upgrades where applicable.
  • Limit reverse proxy exposure to required trusted networks.
  • Monitor reverse proxy availability and restart patterns.
  • Ensure service recovery and failover plans cover authentication gateway outages.

Validation and detection

  • Inventory IBM Security Access Manager Appliance deployments.
  • Identify appliances using the reverse proxy component.
  • Confirm software levels against IBM advisory guidance.
  • Review whether reverse proxy services are internet-facing.
  • Check monitoring for abnormal availability events around exposed proxies.
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.

cve · low confidence lookup

CVE-2019-4036 mapping review

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

Open ATT&CK lookup
Vulnerability profileCVE Program record
Severity
High
CVSS
7.5 (3.0)
Known Exploited
No
Published

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

Vulnerability scoring details

Base CVSS 3.0 score

7.5High
CVSS 3.0 vector shape for CVE-2019-4036Attack VectorAttack ComplexityPrivileges RequiredUser InteractionScopeConfidentiality ImpactIntegrity ImpactAvailability Impact

Vector: CVSS:3.0/S:U/C:N/UI:N/A:H/PR:N/AV:N/AC:L/I:N/RC:C/RL:O/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
IBMSecurity Access ManagerSee advisoryaffected
Weakness

CWE details

No CWE listed

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