CVE-2026-18931: Talassoft Hard-coded Credentials Vulnerability

CVE-2026-18931 Overview

CVE-2026-18931 is a hard-coded credentials vulnerability [CWE-798] in TMT Machine Industry and Trade Ltd. Co. Talassoft Industrial Management Software. The flaw allows unauthenticated network-based attackers to retrieve embedded sensitive data from affected installations. All versions from V.4 through versions prior to V.16 are impacted. The vulnerability requires no privileges and no user interaction, making it trivial to exploit against exposed instances. Successful exploitation compromises the confidentiality and integrity of data protected by the embedded credentials.

Critical Impact
Unauthenticated remote attackers can extract embedded sensitive data from Talassoft Industrial Management Software by leveraging built-in credentials shipped with the product.

Affected Products

Talassoft Industrial Management Software V.4
Talassoft Industrial Management Software versions between V.4 and V.16
Talassoft Industrial Management Software versions prior to V.16

Discovery Timeline

2026-09-01 - CVE-2026-18931 published to the National Vulnerability Database (NVD)
2026-09-01 - Last updated in NVD database

Technical Details for CVE-2026-18931

Vulnerability Analysis

The vulnerability stems from the use of hard-coded credentials embedded in Talassoft Industrial Management Software. Hard-coded credentials are authentication secrets compiled directly into an application binary or configuration, shipped identically to every customer. When an attacker recovers these credentials from one deployment, they gain the same level of access on every other deployment of the affected version. In industrial management software, this typically exposes production data, machine telemetry, operator records, and integration secrets. The Turkish national cyber authority tracked the issue in advisory TR-26-0965.

Root Cause

The root cause is the inclusion of static, non-rotatable credentials inside the product code path used to access sensitive resources. Because the credentials are identical across installations and cannot be changed by end customers without vendor action, standard credential rotation and password policies cannot remediate the exposure. This falls under [CWE-798: Use of Hard-coded Credentials].

Attack Vector

An attacker reaches the vulnerable interface over the network without authentication or user interaction. After extracting the embedded credentials from a binary, firmware image, or intercepted session, the attacker replays them against any exposed Talassoft instance to retrieve sensitive data. No memory corruption, injection, or privilege escalation primitive is required.

No public proof-of-concept code has been published for CVE-2026-18931. Refer to the Turkish CERT advisory TR-26-0965 for coordinated disclosure details.

Detection Methods for CVE-2026-18931

Indicators of Compromise

Successful authentications to Talassoft Industrial Management Software from unexpected external IP addresses or non-operator workstations.
Repeated identical authentication sequences across multiple Talassoft deployments, indicating credential reuse from the embedded secret.
Bulk data reads or exports from Talassoft components outside normal operator working hours.

Detection Strategies

Inventory all Talassoft Industrial Management Software instances and confirm the running version against the vulnerable range V.4 through pre-V.16.
Inspect network traffic to Talassoft services for authentication attempts originating from outside the operational technology (OT) management segment.
Correlate application-level access logs with expected user identities to surface sessions established without a corresponding interactive login.

Monitoring Recommendations

Forward Talassoft application, authentication, and web server logs to a centralized log platform for retention and correlation.
Alert on any access to sensitive data endpoints from source addresses not on an approved allowlist.
Monitor egress traffic from hosts running Talassoft for anomalous outbound data volumes that could indicate data retrieval.

How to Mitigate CVE-2026-18931

Immediate Actions Required

Upgrade Talassoft Industrial Management Software to V.16 or later, which is outside the affected range.
Restrict network access to Talassoft management interfaces so they are reachable only from trusted administrative networks.
Rotate any credentials, API tokens, or integration secrets that Talassoft may have accessed with the embedded credentials.
Review authentication and data access logs for evidence of prior misuse of the hard-coded credentials.

Patch Information

The vendor advisory referenced by the Turkish national cyber authority in TR-26-0965 indicates the issue is resolved in Talassoft Industrial Management Software V.16. Operators running any version from V.4 up to but not including V.16 must upgrade. Contact TMT Machine Industry and Trade Ltd. Co. for the update package and deployment guidance.

Workarounds

Place Talassoft behind a VPN or jump host and block direct exposure to untrusted networks until V.16 is deployed.
Apply firewall rules that limit inbound access to Talassoft services to a small set of known administrator IP addresses.
Enable enhanced logging on the Talassoft host and upstream network devices to preserve forensic evidence during the mitigation window.

bash

# Configuration example: restrict inbound access to Talassoft management port
# Replace <TALASSOFT_PORT> and <ADMIN_SUBNET> with values for your environment
iptables -A INPUT -p tcp --dport <TALASSOFT_PORT> -s <ADMIN_SUBNET> -j ACCEPT
iptables -A INPUT -p tcp --dport <TALASSOFT_PORT> -j DROP