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CVE-2026-27690

SAP Approuter vulnerability

9.1 CRITICALEPSS 0.68%
  1. Published13 Jul 2026

Description

Due to an HTTP Request Smuggling vulnerability in SAP Approuter, an unauthenticated attacker could send a specially crafted HTTP request that leads to request-response desynchronization. This could result in the exposure of user responses and cause the system to become unavailable. This leads to a high impact on confidentiality and availability.

CVSS 3.1 breakdown

Attack vectorNetwork
Attack complexityLow
Privileges requiredNone
User interactionNone
ScopeUnchanged
ConfidentialityHigh
IntegrityNone
AvailabilityHigh
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H

Affected products

SAP Approuter< 20.10.0

Remediation

Fixed in
SAP Approuter≥ 20.10.0
Patch & vendor advisories

References

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Frequently asked

Is CVE-2026-27690 being actively exploited?

CVE-2026-27690 is not in the CISA KEV catalog. Its EPSS exploit probability is 0.68%.

How severe is CVE-2026-27690?

CVE-2026-27690 has a CVSS 3.1 base score of 9.1, rated critical. EPSS estimates a 0.68% probability of exploitation.

Which products are affected by CVE-2026-27690?

Affected products include SAP Approuter.

How do I fix CVE-2026-27690?

Upgrade affected software to a fixed version, for example SAP Approuter 20.10.0 or later, then confirm no affected versions remain in your inventory.

How Secuno handles this

Secuno correlates vulnerabilities like CVE-2026-27690 against the real software inventory on every managed device, as each hourly inventory arrives. Rather than a static severity, each match is scored in context: exploit availability, EPSS, the asset's exposure, and business criticality decide where it lands in the queue. If an affected version is present anywhere across your portfolio, it surfaces automatically with a prioritised remediation path.

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Data from the NVD, CISA KEV catalog and FIRST EPSS. CVSS 3.1 base score shown where available.