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CVE Record

CVE-2021-21490: SAP NetWeaver AS for ABAP (Web Survey), versions - 700, 702, 710, 711, 730, 731, 750, 750, 752, 75A, 75F, d...

SAP NetWeaver AS for ABAP (Web Survey), versions - 700, 702, 710, 711, 730, 731, 750, 750, 752, 75A, 75F, does not sufficiently encode input and output parameters which results in reflected cross site scripting vulnerability, through which a malicious user can access data relating to the current session and use it to impersonate a user and access all information with the same rights as the target user.

MediumCVSS 6.1Not KEV-listedUpdated
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Glexia's TakeAutomated analysismoderate

Security readout for executives and security teams

Plain-English summary

This SAP NetWeaver AS for ABAP Web Survey issue is a reflected cross-site scripting flaw. An attacker could trick a user into interacting with malicious content, then abuse the victim’s current session to view or act on information with that user’s rights. It is not listed as actively exploited in the provided sources.

Executive priority

Treat this as a moderate-priority SAP hygiene issue. Prioritize systems exposed to external users or used by privileged employees, because successful exploitation could impersonate the victim’s SAP session within that user’s existing access rights.

Technical view

CVE-2021-21490 stems from insufficient encoding of input and output parameters in SAP NetWeaver AS for ABAP Web Survey. CVSS 3.0 is 6.1 with network access, low complexity, no privileges, required user interaction, changed scope, and low confidentiality and integrity impact.

Likely exposure

Exposure is most likely in organizations running SAP NetWeaver AS for ABAP Web Survey on the listed SAP version lines: 700, 702, 710, 711, 730, 731, 750, 752, 75A, or 75F. Public or broadly reachable Web Survey functionality increases practical risk.

Exploitation context

The source bundle does not show CISA KEV listing or other evidence of active exploitation. The vulnerability requires user interaction, consistent with reflected XSS. Business impact depends on whether attackers can target authenticated users with meaningful SAP privileges.

Researcher notes

The bundle provides the core vulnerability description, affected product, CVSS vector, and SAP references, but not detailed patch text or exploit evidence. Avoid assuming exploit availability. Validate exposure through SAP component inventory and vendor note status rather than payload-based testing.

Mitigation direction

  • Review SAP Note 3004043 and the SAP security advisory page for vendor remediation guidance.
  • Apply SAP-provided corrections or support packages where applicable to affected Web Survey deployments.
  • If Web Survey is unnecessary, consult SAP guidance on disabling or limiting access.
  • Reduce exposure of SAP web interfaces to trusted networks where business requirements allow.

Validation and detection

  • Inventory SAP NetWeaver AS for ABAP systems and identify Web Survey usage.
  • Compare installed SAP release and component status against SAP Note 3004043 guidance.
  • Confirm whether affected web functionality is internet-facing or reachable by untrusted users.
  • Review change records to verify relevant SAP corrections were implemented.
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

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CVE-2021-21490 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
Medium
CVSS
6.1 (3.0)
Known Exploited
No
Published

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/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
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
6.1CVSS 3.0MediumCVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N2.82.7Primary CVE score

Vulnerability scoring details

Base CVSS 3.0 score

6.1Medium
CVSS 3.0 vector shape for CVE-2021-21490Attack VectorAttack ComplexityPrivileges RequiredUser InteractionScopeConfidentiality ImpactIntegrity ImpactAvailability Impact

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/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
SAP SESAP NetWeaver AS for ABAP (Web Survey)< 700, < 702, < 710, < 711, < 730, < 731, < 750, < 752, < 75A, < 75FListed
Weakness

CWE details

No CWE listed

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