VulnerabilityPublished 10 Mar 2026Updated 11 Mar 2026

CVE-2026-27688: SAP NetWeaver Application Server for ABAP · Missing Authorization

Affects SAP NetWeaver Application Server for ABAPSource CVE Database V5

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Not known to be exploited · CVSS 5.0 Medium.

Data as of 30 Oct 2026, 11:52 UTC

CVSS 3.1 base score

5.0Medium

How severe the flaw is on the 0–10 CVSS scale.

EPSS: 0.2% chance of exploitation in 30 days – higher than 14% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.

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

Attack Vector: Network
Attack Complexity: Low
Privileges Required: Low
User Interaction: None
Scope: Changed
Confidentiality: Low
Integrity: None
Availability: None

Bold values are the worst case: easiest to exploit or largest impact.

Attack Vector: Network: The vulnerable component is bound to the network stack and the set of possible attackers extends beyond the other options listed, up to and including the entire Internet. Such a vulnerability is often termed 'remotely exploitable' and can be thought of as an attack being exploitable at the protocol level one or more network hops away (e.g., across one or more routers).
Attack Complexity: Low: Specialized access conditions or extenuating circumstances do not exist. An attacker can expect repeatable success against the vulnerable component.
Privileges Required: Low: The attacker is authorized with (i.e., requires) privileges that provide basic user capabilities that could normally affect only settings and files owned by a user. Alternatively, an attacker with Low privileges may have the ability to cause an impact only to non-sensitive resources.
User Interaction: None: The vulnerable system can be exploited without any interaction from any user.
Scope: Changed: An exploited vulnerability can affect resources beyond the security scope managed by the security authority of the vulnerable component. In this case, the vulnerable component and the impacted component are different and managed by different security authorities.
Confidentiality: Low: There is some loss of confidentiality. Access to some restricted information is obtained, but the attacker does not have control over what information is obtained, or the amount or kind of loss is limited. The information disclosure does not cause a direct, serious loss to the impacted component.
Integrity: None: There is no loss of integrity within the impacted component.
Availability: None: There is no impact to availability within the impacted component.

Definitions: FIRST CVSS v3.1 specification.

Exploitation evidence

Disclosed: evidence found.
CVE published 10 Mar 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 30 Oct 2026.

Disclosed: The CVE record is public on cve.org. Its publication is t = 0.
Detectable: A public nuclei template can find exposed instances, for defenders and attackers alike.
Weaponized: A Metasploit exploit module or Exploit-DB entry exists (Metasploit scanner modules do not count), or CISA SSVC or the CVSS exploit maturity reports a public proof of concept.
Exploited in the wild: CISA KEV lists it, CISA SSVC rates exploitation active, or a source reports attacks.
Observed by OffSeq Mirage: OffSeq Mirage honeypot sensors recorded attack traffic for this CVE, or found exposed hosts without attack traffic.

Moments are spaced evenly, not to scale; a dashed line marks a gap of six months or more. Deltas count from t = 0. Sources that give only a date (CISA KEV, Exploit-DB, or a time of exactly 00:00Z) read “same day” rather than hours. Metasploit modules carry the flaw’s disclosure date, not their release date, and nuclei templates carry no date, so both appear above but not on the timeline.

What to do

Affected software

Product	Affected	Fixed in
SAP_SESAP NetWeaver Application Server for ABAP	Affected SAP_BASIS 700 – SAP_BASIS 816 18 affected builds	Fixed in–

AI-suggested

To mitigate CVE-2026-27688, organizations should first apply any available SAP patches or security notes addressing this missing authorization check once released by SAP. In the absence of immediate patches, administrators should restrict execution permissions for the vulnerable RFC function module to only highly trusted and necessary users, minimizing the attack surface. Implement strict access control policies and regularly audit user privileges to detect and remove unnecessary permissions that could enable exploitation. Employ network segmentation and monitoring to detect anomalous access patterns to SAP systems, particularly focusing on RFC calls. Enhance logging and alerting for suspicious activities related to Database Analyzer Log Files access. Consider deploying SAP-specific security tools that can enforce runtime authorization checks or block unauthorized RFC calls. Additionally, enforce strong authentication mechanisms, including multi-factor authentication, to reduce the risk of credential compromise. Regularly train staff on secure SAP usage and monitor for insider threats. Finally, maintain up-to-date backups and incident response plans tailored to SAP environments to quickly respond if exploitation occurs.

Description

CVE-2026-27688 is a medium-severity vulnerability in SAP NetWeaver Application Server for ABAP caused by a missing authorization check in a specific RFC function module. An authenticated attacker with user privileges able to execute this function can read Database Analyzer Log Files, potentially exposing sensitive information. The vulnerability affects multiple SAP_BASIS versions from 700 through 816. While the confidentiality of data is impacted, system integrity and availability remain unaffected. Exploitation does not require user interaction but does require some level of authenticated privileges. No known exploits are currently reported in the wild. Organizations using affected SAP versions should prioritize applying patches or implementing compensating controls to restrict access to the vulnerable function module. Countries with significant SAP deployments and critical infrastructure relying on SAP systems are at higher risk. The CVSS score is 5.0, reflecting a medium severity level due to limited confidentiality impact and required privileges for exploitation.

Impact

The primary impact of CVE-2026-27688 is the unauthorized disclosure of sensitive information contained within Database Analyzer Log Files in SAP NetWeaver Application Server for ABAP environments. This exposure can lead to information leakage that may assist attackers in reconnaissance or facilitate subsequent attacks such as privilege escalation or lateral movement within the enterprise network. Although the vulnerability does not compromise system integrity or availability, the confidentiality breach could affect compliance with data protection regulations and damage organizational trust. Enterprises with extensive SAP deployments, especially those in regulated industries like finance, healthcare, manufacturing, and critical infrastructure, face increased risk. Attackers with authenticated access—potentially via compromised credentials or insider threats—could exploit this flaw to gain insights into system operations or sensitive business data. The medium severity rating suggests the impact is significant but not catastrophic, emphasizing the need for timely remediation to prevent exploitation in sensitive environments.

CWE-862Missing Authorization (opens in a new tab)
Class weaknessLikelihood of exploit: HighCWE Top 25 (2025): #4OWASP Top 10 A01:2025: Broken Access Control (opens in a new tab)
The product does not perform an authorization check when an actor attempts to access a resource or perform an action.
Architecture and Design
Divide the product into anonymous, normal, privileged, and administrative areas. Reduce the attack surface by carefully mapping roles with data and functionality. Use role-based access control (RBAC) to enforce the roles at the appropriate boundaries.
Architecture and Design
Ensure that access control checks are performed related to the business logic. These checks may be different than the access control checks that are applied to more generic resources such as files, connections, processes, memory, and database records.
Architecture and Design · Libraries or Frameworks
Use a vetted library or framework that does not allow this weakness to occur or provides constructs that make this weakness easier to avoid.
OWASP Cheat Sheets
Authorization (opens in a new tab)
OWASP ASVS 4.0.3
V8.3.8 (opens in a new tab)
V13.4.2 (opens in a new tab)
V7.2.2 (opens in a new tab)
Attack patterns
Exploitation of Thunderbolt Protection Flaws (opens in a new tab)
From MITRE CWE, MITRE CAPEC and OWASP (Top 10, OpenCRE).

References

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Exploitation evidence

What to do

Affected software

Description

AI analysisMachine-generated, updated 17 Mar 2026, 19:15 UTC

WeaknessesCWE-862

Technical details

References

Community reviews

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