CVE-2025-1044

What it actually does

CVE-2025-1044 is a critical authentication bypass in the Logsign Unified SecOps Platform web service, which listens on TCP/443 by default. The flaw is caused by an improperly implemented authentication algorithm, allowing a remote, unauthenticated attacker to access protected functionality without valid credentials. Depending on exposed administrative capabilities, successful exploitation may allow unauthorized access to security monitoring data, configuration, integrations, user management, alerting workflows, and potentially further compromise of connected systems or credentials stored in the platform.

Why it matters to the business

Because Logsign Unified SecOps Platform is used for security operations and monitoring, unauthorized access can undermine an organization’s ability to detect and respond to attacks. An attacker who bypasses authentication may view sensitive security telemetry, tamper with alerts, disable or weaken monitoring, access incident data, or use integrations as a pivot point. The CVSS score is critical and the EPSS probability is high, indicating meaningful exploitation risk even though the vulnerability is not currently listed in CISA KEV and no ransomware use is noted. Organizations with internet-exposed Logsign instances should treat this as urgent because compromise of a SecOps platform can directly affect visibility, incident response, and trust in security data.

How an attack unfolds

An attacker first identifies a Logsign Unified SecOps Platform web interface, typically reachable over HTTPS on TCP port 443. Because exploitation does not require authentication, the attacker can interact directly with the vulnerable web service and send requests crafted to take advantage of the defective authentication logic. If successful, the service treats the attacker as authenticated or grants access to functionality that should require a valid session. From there, the attacker may enumerate users, review dashboards and alerts, access logs and incident records, alter configuration, suppress detections, or abuse connected integrations. In a post-compromise scenario, the attacker may attempt to erase evidence, create persistence through platform accounts or API tokens if available, or pivot using credentials, secrets, or network visibility exposed through the platform.

How to fix it

Upgrade Logsign Unified SecOps Platform to a vendor-fixed release as soon as one is available and follow Logsign’s official advisory and release notes for CVE-2025-1044. No specific fixed version was provided in the supplied data, so administrators should obtain the latest supported version directly from the vendor and confirm it contains the authentication bypass fix. Until patched, restrict access to the Logsign web interface to trusted administrative networks only, place it behind a VPN or zero-trust access proxy, block direct internet exposure, and enforce network-layer allowlisting for TCP/443. Review and rotate credentials, API tokens, integration secrets, and service accounts accessible through the platform if exploitation is suspected. Ensure audit logging is enabled and forwarded to an independent logging destination that cannot be modified from the Logsign instance itself.

How to confirm the fix worked

Confirm the deployed Logsign Unified SecOps Platform version against the vendor’s fixed release information and verify that no vulnerable builds remain in asset inventory, vulnerability scanners, software inventory, or external attack-surface monitoring. Validate that the web service on TCP/443 is not reachable from untrusted networks unless explicitly required and protected by compensating controls. Perform an authenticated and unauthenticated access test: unauthenticated requests to administrative or protected endpoints should be denied with an appropriate authentication challenge or access-denied response. Review vendor-provided checksums, build numbers, release notes, or appliance update status to confirm the patch was applied. After remediation, review user accounts, roles, API keys, integrations, alerting rules, forwarding settings, and audit logs for unauthorized changes made before the fix.

Typical attack path

1. Discover an exposed Logsign Unified SecOps Platform web service, commonly over TCP/443.
2. Confirm the target is a vulnerable Logsign Unified SecOps Platform installation through banners, page metadata, endpoint behavior, or version information if available.
3. Send unauthenticated HTTPS requests crafted to trigger the authentication bypass condition in the web service.
4. Gain access to protected application functions without valid credentials.
5. Enumerate accessible users, roles, dashboards, alerts, logs, integrations, API tokens, or configuration data.
6. Modify security monitoring configuration, suppress alerts, create unauthorized access paths, or collect sensitive operational data.
7. Attempt to cover tracks by deleting or altering logs, alerts, sessions, or audit records where permissions allow.

How to detect it

Investigate whether the Logsign web service received suspicious unauthenticated HTTPS requests to protected application endpoints, especially from unfamiliar external IP addresses, scanning infrastructure, hosting providers, or sources with no legitimate administrative purpose. Review web access logs, application audit logs, authentication logs, session records, administrator activity logs, API access logs, reverse proxy logs, WAF logs, firewall logs, and VPN or zero-trust access logs. Look for successful access to protected resources without a preceding successful login event, session creation anomalies, administrative actions tied to missing or unusual user identities, unexpected changes to users or roles, creation of new API tokens, disabled alerts or collectors, modified integrations, altered forwarding destinations, or deletion/export of logs. Because the issue is an authentication bypass rather than a payload-specific exploit, detection is behavior-based: correlate unauthenticated requests, unusual source IPs, protected endpoint access, and subsequent configuration changes. If logs are stored only on the Logsign platform, preserve them externally before further investigation because an attacker with administrative access may be able to alter evidence.

• TCP/443 access to Logsign Unified SecOps Platform from unknown or untrusted external IP addresses
• Successful access to protected Logsign web endpoints without a preceding successful login event
• Administrative action recorded with missing, null, anonymous, or unexpected user identity
• New Logsign user account creation not associated with an approved change
• New Logsign API token creation not associated with an approved change
• Unexpected modification of Logsign authentication settings
• Unexpected modification of Logsign user roles or permissions
• Unexpected disabling of Logsign alerts, rules, collectors, or correlation policies
• Unexpected changes to Logsign integrations, forwarding destinations, or notification settings
• Unexpected deletion or truncation of Logsign audit logs or event logs
• Large export or download of logs, alerts, incidents, or configuration data from the Logsign web interface

What your security team should do

• Immediately identify all Logsign Unified SecOps Platform instances, especially those exposed to the internet or reachable from broad internal networks.
• Prioritize patching or vendor-directed upgrading because the vulnerability is critical and has a high EPSS score.
• If a fixed version cannot be applied immediately, restrict TCP/443 access to trusted administrative sources using firewall rules, VPN, zero-trust access, or reverse proxy controls.
• Hunt for suspicious unauthenticated access patterns, unexpected administrative activity, newly created users, changed alerting rules, disabled collectors, modified integrations, or deleted logs.
• Forward Logsign audit and web access logs to an independent SIEM or log repository to preserve evidence outside the potentially compromised platform.
• Rotate credentials, API tokens, integration secrets, and service account passwords if there are signs of unauthorized access.
• Review exposure continuously with external attack-surface management and internal vulnerability scanning until all instances are remediated.
• Monitor vendor advisories and threat intelligence for exploit publication, fixed-version details, and any future CISA KEV or ransomware-related updates.