CVE-2025-5519: Information Disclosure in ArgusTech's BILGER
Insertion of Sensitive Information Into Sent Data vulnerability in ArgusTech BILGER allows Choosing Message Identifier.
This issue affects BILGER: before 2.4.6.
Security readout for executives and security teams
Plain-English summary
CVE-2025-5519 is a medium-severity information disclosure issue in ArgusTech BILGER before 2.4.6. A network attacker needs no login or user interaction, but the published impact is limited confidentiality loss and limited availability impact. Treat internet-facing or externally reachable deployments as the priority.
Executive priority
Prioritize this as a near-term patching and exposure-reduction item, especially for externally reachable BILGER systems. It is not currently evidenced as actively exploited, but the unauthenticated network attack conditions make delayed remediation harder to justify.
Technical view
The CVE describes CWE-201: sensitive information inserted into sent data. It affects ArgusTech BILGER versions before 2.4.6 and is associated with “Choosing Message Identifier.” CVSS 3.1 is 6.5: network-accessible, low complexity, no privileges, no user interaction, unchanged scope, low confidentiality impact, no integrity impact, and low availability impact.
Likely exposure
Exposure is limited to organizations running ArgusTech BILGER before 2.4.6. Risk is higher where BILGER is reachable from untrusted networks. The source bundle does not identify specific modules, deployment modes, default configurations, or CPEs, so product inventory is required to confirm exposure.
Exploitation context
The source bundle does not cite active exploitation, and the CVE is not marked as CISA KEV. The CVSS vector indicates exploitation is remotely reachable and low complexity without authentication, but no public exploit details or exploitation evidence are provided in the supplied sources.
Researcher notes
The public data is sparse. Key missing details include affected components, exact data exposed, vendor mitigation text, and reliable exploit observations. Validation should focus on version confirmation, reachable attack surface, and whether local telemetry can identify abnormal message identifier usage.
Mitigation direction
Upgrade BILGER deployments from pre-2.4.6 to 2.4.6 or later.
Check ArgusTech or government advisory guidance before applying compensating controls.
Restrict BILGER access to trusted networks where immediate upgrade is not possible.
Review outbound data handling around BILGER message identifiers if operationally feasible.
Validation and detection
Inventory all ArgusTech BILGER instances and record exact versions.
Confirm whether any instance runs a version before 2.4.6.
Map which BILGER interfaces are reachable from untrusted networks.
Verify upgraded systems report version 2.4.6 or later.
Review relevant logs for unusual message identifier activity, if logged.
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Potential ATT&CK relevance
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
cwe · medium confidence lookup
CWE-201: Information exposure and cloud metadata lookup
Information exposure and SSRF weaknesses can make discovery, cloud metadata, and credential material review relevant. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
We collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.
CWE-201 · source CWE mapping
Insertion of Sensitive Information Into Sent Data
Insertion of Sensitive Information Into Sent Data represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.