How severe is CVE-2026-34257?

CVE-2026-34257 has a CVSS 3.x base score of 6.1, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.

Is CVE-2026-34257 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (5th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-34257?

CVE-2026-34257 primarily affects Sap Netweaver Application Server Abap. In total, 14 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2026-34257?

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

Does CVE-2026-34257 have an EU (EUVD) identifier?

Yes. CVE-2026-34257 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-22168.

When was CVE-2026-34257 published?

CVE-2026-34257 was published on 2026-04-14 and last updated on 2026-06-17.

CVE-2026-34257

CVE-2026-34257 is a medium-severity vulnerability in Sap Netweaver Application Server Abap with a CVSS 3.x base score of 6.1. 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-601.

Key facts

Severity: Medium (CVSS 3.x base score 6.1)
EPSS exploit prediction: 0% (5th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-22168
Weakness: CWE-601
Affected product: Sap Netweaver Application Server Abap
Published: 2026-04-14
Last modified: 2026-06-17

Description

Due to an Open Redirect vulnerability in SAP NetWeaver Application Server ABAP, an unauthenticated attacker could craft malicious URL that, if accessed by a victim, they could be redirected to the page controlled by the attacker. This causes low impact on confidentiality and integrity of the application with no impact on availability.

Frequently asked questions

What is CVE-2026-34257?: Due to an Open Redirect vulnerability in SAP NetWeaver Application Server ABAP, an unauthenticated attacker could craft malicious URL that, if accessed by a victim, they could be redirected to the page controlled by the attacker. This causes low impact on confidentiality and integrity of the application with no impact on availability.
How severe is CVE-2026-34257?: CVE-2026-34257 has a CVSS 3.x base score of 6.1, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.
Is CVE-2026-34257 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (5th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-34257?: CVE-2026-34257 primarily affects Sap Netweaver Application Server Abap. In total, 14 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2026-34257?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2026-34257 have an EU (EUVD) identifier?: Yes. CVE-2026-34257 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-22168.
When was CVE-2026-34257 published?: CVE-2026-34257 was published on 2026-04-14 and last updated on 2026-06-17.

References

Affected products (14)

cpe:2.3:a:sap:netweaver_application_server_abap:700:*:*:*:sap_basis:*:*:*
cpe:2.3:a:sap:netweaver_application_server_abap:701:*:*:*:sap_basis:*:*:*
cpe:2.3:a:sap:netweaver_application_server_abap:702:*:*:*:sap_basis:*:*:*
cpe:2.3:a:sap:netweaver_application_server_abap:731:*:*:*:sap_basis:*:*:*
cpe:2.3:a:sap:netweaver_application_server_abap:740:*:*:*:sap_basis:*:*:*
cpe:2.3:a:sap:netweaver_application_server_abap:750:*:*:*:sap_basis:*:*:*
cpe:2.3:a:sap:netweaver_application_server_abap:752:*:*:*:sap_basis:*:*:*
cpe:2.3:a:sap:netweaver_application_server_abap:753:*:*:*:sap_basis:*:*:*
cpe:2.3:a:sap:netweaver_application_server_abap:754:*:*:*:sap_basis:*:*:*
cpe:2.3:a:sap:netweaver_application_server_abap:755:*:*:*:sap_basis:*:*:*
cpe:2.3:a:sap:netweaver_application_server_abap:756:*:*:*:sap_basis:*:*:*
cpe:2.3:a:sap:netweaver_application_server_abap:757:*:*:*:sap_basis:*:*:*
cpe:2.3:a:sap:netweaver_application_server_abap:758:*:*:*:sap_basis:*:*:*
cpe:2.3:a:sap:netweaver_application_server_abap:816:*:*:*:sap_basis:*:*:*

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Other CWE-601 (Open Redirect) vulnerabilities

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