CVE-2026-0510VulnerabilityPublished 13 Jan 2026

CVE-2026-0510: SAP_SE NW AS Java UME User Mapping · Inadequate Encryption Strength

Affects SAP_SE NW AS Java UME User MappingSource CVE Database V5

Not known to be exploited · CVSS 3.0 Low.

Data as of 26 Oct 2026, 06:26 UTC

CVSS 3.1 base score

3.0Low

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

EPSS: 0.1% chance of exploitation in 30 days – higher than 3% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.

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

Attack Vector: Network
Attack Complexity: High
Privileges Required: High
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: High: A successful attack depends on conditions beyond the attacker's control. That is, a successful attack cannot be accomplished at will, but requires the attacker to invest in some measurable amount of effort in preparation or execution against the vulnerable component before a successful attack can be expected. For example, a successful attack may require an attacker to: gather knowledge about the environment in which the vulnerable target/component exists; prepare the target environment to improve exploit reliability; or inject themselves into the logical network path between the target and the resource requested by the victim in order to read and/or modify network communications (e.g., a man in the middle attack).
Privileges Required: High: The attacker is authorized with (i.e., requires) privileges that provide significant (e.g., administrative) control over the vulnerable component that could affect component-wide settings and files.
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 13 Jan 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponised: 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 2026-10-26.

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.
Weaponised: Public exploit code exists in Metasploit or Exploit-DB, or CISA SSVC 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_SENW AS Java UME User Mapping	Affected =ENGINEAPI 7.50 =SERVERCORE 7.50 =UMEADMIN 7.50	Fixed in–

AI-suggested

European organizations should implement several targeted mitigations to address CVE-2026-0510 effectively. First, monitor SAP security advisories closely and apply patches or updates promptly once SAP releases fixes for the affected NW AS Java components. Until patches are available, restrict high-privileged user access to the UME components by enforcing strict role-based access controls and regularly reviewing administrative privileges. Employ network segmentation and firewall rules to limit network access to SAP NW AS Java servers, especially from untrusted or external networks. Enable detailed logging and monitoring of UME-related activities to detect anomalous access patterns or attempts to access user mapping data. Conduct regular security audits and penetration tests focused on SAP environments to identify potential privilege escalation paths. Additionally, consider encrypting sensitive data at rest and in transit using modern cryptographic standards to mitigate risks from obsolete encryption algorithms. Finally, train SAP administrators and security teams on the risks associated with cryptographic weaknesses and the importance of safeguarding high-privilege accounts.

Description

The User Management Engine (UME) in NetWeaver Application Server for Java (NW AS Java) utilizes an obsolete cryptographic algorithm for encrypting User Mapping data. This weakness could allow an attacker with high-privileged access to exploit the vulnerability under specific conditions potentially leading to partial disclosure of sensitive information.This has low impact on confidentiality with no impact on integrity and availability of the application.

Impact

For European organizations, the impact of CVE-2026-0510 is limited but non-negligible. The partial disclosure of sensitive user mapping data could facilitate targeted attacks, such as privilege escalation or identity spoofing, especially in complex SAP environments where user mappings govern access controls. Although the vulnerability does not compromise integrity or availability, the confidentiality breach could expose sensitive business or personal data, potentially violating GDPR requirements and leading to regulatory scrutiny. Organizations relying heavily on SAP NW AS Java for critical business processes might face increased risk if attackers leverage this vulnerability as part of a broader attack chain. The requirement for high privileges and network access reduces the likelihood of widespread exploitation but underscores the importance of securing administrative access and network boundaries. The absence of known exploits lowers immediate risk but does not eliminate the threat, as attackers could develop exploits over time.

CWE-326Inadequate Encryption Strength (opens in a new tab)
Class weaknessOWASP Top 10 A04:2025: Cryptographic Failures (opens in a new tab)
The product stores or transmits sensitive data using an encryption scheme that is theoretically sound, but is not strong enough for the level of protection required.
Architecture and Design
Use an encryption scheme that is currently considered to be strong by experts in the field.
OWASP Cheat Sheets
Cryptographic Storage (opens in a new tab)
Key Management (opens in a new tab)
Transport Layer Protection (opens in a new tab)
User Privacy Protection (opens in a new tab)
Password Storage (opens in a new tab)
OWASP ASVS 4.0.3
V2.8.3 (opens in a new tab)
V6.2.7 (opens in a new tab)
V6.2.4 (opens in a new tab)
Attack patterns
Encryption Brute Forcing (opens in a new tab)
Brute Force (opens in a new tab)
Protocol Analysis (opens in a new tab)
From MITRE CWE, MITRE CAPEC and OWASP (Top 10, OpenCRE).

References

Community reviews

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Exploitation evidence

What to do

Affected software

Description

AI analysisMachine-generated, updated 13 Jan 2026, 01:58 UTC

WeaknessesCWE-326

Technical details

References

Community reviews

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