How severe is CVE-2026-66761?

CVE-2026-66761 has a CVSS 3.x base score of 4.3, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability low.

Is CVE-2026-66761 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (30th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-66761?

CVE-2026-66761 affects Sap Approuter. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-66761?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2026-66761 published?

CVE-2026-66761 was published on 2026-08-11 and last updated on 2026-09-08.

CVE-2026-66761

CVE-2026-66761 is a medium-severity vulnerability in Sap Approuter with a CVSS 3.x base score of 4.3. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-770.

Key facts

Severity: Medium (CVSS 3.x base score 4.3)
EPSS exploit prediction: 0% (30th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-770
Affected product: Sap Approuter
Published: 2026-08-11
Last modified: 2026-09-08

Description

SAP Approuter does not enforce sufficient flow control in certain functionality. An attacker with low privileges could send high volumes of data without consuming responses, causing unbounded memory growth. This results in a low impact on availability. There is no impact on confidentiality and integrity.

Frequently asked questions

What is CVE-2026-66761?: SAP Approuter does not enforce sufficient flow control in certain functionality. An attacker with low privileges could send high volumes of data without consuming responses, causing unbounded memory growth. This results in a low impact on availability. There is no impact on confidentiality and integrity.
How severe is CVE-2026-66761?: CVE-2026-66761 has a CVSS 3.x base score of 4.3, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability low.
Is CVE-2026-66761 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (30th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-66761?: CVE-2026-66761 affects Sap Approuter. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-66761?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2026-66761 published?: CVE-2026-66761 was published on 2026-08-11 and last updated on 2026-09-08.

References

Affected products (1)

cpe:2.3:a:sap:approuter:*:*:*:*:*:node.js:*:*

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