CVE-2021-40495· NVD / CVE Program· CNA sap

There are multiple Denial-of Service vulnerabilities in SAP NetWeaver Application Server for ABAP and ABAP Platform - versions 740, 750, 751

There are multiple Denial-of Service vulnerabilities in SAP NetWeaver Application Server for ABAP and ABAP Platform - versions 740, 750, 751, 752, 753, 754, 755. An unauthorized attacker can use the public SICF service /sap/public/bc/abap to reduce the performance of SAP NetWeaver Application Server ABAP and ABAP Platform.

MediumCVSS 5.3 · v3.1—No exploit No fix recorded

Published: Oct 12, 2021
Updated: Jun 17, 2026
EPSS: 1.1% · 64th percentile
CWE: —

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Action score

Monitor

Low priority for now.

CVSS: 21 / 40 · 5.3 / 10
CISA KEV: 0 / 30 · Not listed
EPSS: 0 / 30 · 1.1%

Noroxi analysis

No Noroxi analysis for this record yet

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Affected systems

Vendor	Product	CPE
sap	netweaver abap	cpe:2.3:a:sap:netweaver_abap
sap	netweaver application server abap	cpe:2.3:a:sap:netweaver_application_server_abap

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

sap netweaver abap740
sap netweaver abap750
sap netweaver abap751
sap netweaver abap752
sap netweaver abap753
sap netweaver abap754
sap netweaver abap755
sap netweaver application server abap740
sap netweaver application server abap750
sap netweaver application server abap751
sap netweaver application server abap752
sap netweaver application server abap753
sap netweaver application server abap754
sap netweaver application server abap755

Versions reported by the vendor

Affected version ranges reported by the assigning authority (sap). Independent of NVD's CPE analysis and usually ahead of it.

SAP SE SAP NetWeaver AS ABAP and ABAP Platform
- < 740, < 750, < 751, < 752, < 753, < 754, < 755affected

Same product

sap: all records

Other highest-scoring records for the same primary product.

CVE-2012-4341Multiple stack-based buffer overflows in msg_server.exe in SAP NetWeaver ABAP 7.x allow remote attackers to cause a denial of service (crash
43Plan
CVE-2021-27610SAP NetWeaver ABAP Server and ABAP Platform, versions - 700, 701, 702, 731, 740, 750, 751, 752, 753, 754, 755, 804, does not create informat
39Monitor
CVE-2021-38178The software logistics system of SAP NetWeaver AS ABAP and ABAP Platform versions - 700, 701, 702, 710, 730, 731, 740, 750, 751, 752, 753, 7
35Monitor
CVE-2022-22543SAP NetWeaver Application Server for ABAP (Kernel) and ABAP Platform (Kernel) - versions KERNEL 7.22, 8.04, 7.49, 7.53, 7.77, 7.81, 7.85, 7.
30Monitor
CVE-2021-38181SAP NetWeaver AS ABAP and ABAP Platform - versions 700, 701, 702, 730, 731, 740, 750, 751, 752, 753, 754, 755, 756, allows an attacker to pr
30Monitor
CVE-2021-33677SAP NetWeaver ABAP Server and ABAP Platform, versions - 700, 702, 730, 731, 804, 740, 750, 784, expose functions to external which can lead
30Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

No fix version is recorded for this entry. Check the references for vendor advisories.

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

EPSS, last 120 days

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

No commit or PR link among the references.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

No credits in the CNA record.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

No nightly-computed relations.

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

—

Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

Technical details

Attack conditions

Anyone who can reach it over the internet can trigger it.
No account or password is required.
No user action is required.
No special conditions are required; it is repeatable.

If successful

Confidentiality: none
Integrity: none
Availability: low · the service can be disrupted

Attack vector: Network
Attack complexity: Low
Privileges required: None
User interaction: None
Scope: Unchanged
Confidentiality impact: None
Integrity impact: None
Availability impact: Low

Weakness class (CWE)

—

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

nvd-primary

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

MITRE has no CAPEC/ATT&CK mapping for this CWE.

Change log

No changes recorded on tracked fields yet. Score, KEV, exploit maturity and fix status changes appear here.

References

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records