VulnerabilityPublished 15 Mar 2026Updated 16 Mar 2026

CVE-2026-4169: Tecnick TCExam · Cross-site Scripting

Affects Tecnick TCExamSource CVE Database V5

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Not known to be exploited · CVSS 4.8 Medium · fixed in 16.6.1 : update Tecnick TCExam when convenient.

Data as of 29 Oct 2026, 19:04 UTC

CVSS 4.0 base score

4.8Medium

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

EPSS: 0.2% chance of exploitation in 30 days – higher than 11% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch: Available – fixed in 16.6.1

CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:P/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:X

Attack Vector: Network
Attack Complexity: Low
Attack Requirements: None
Privileges Required: High
User Interaction: Passive
Vulnerable system confidentiality: None
Vulnerable system integrity: Low
Vulnerable system availability: None
Subsequent system confidentiality: None
Subsequent system integrity: None
Subsequent system availability: None

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

Attack Vector: Network: The vulnerable system is bound to the network stack and the set of possible attackers extends beyond the other options listed below, 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: The attacker must take no measurable action to exploit the vulnerability. The attack requires no target-specific circumvention to exploit the vulnerability. An attacker can expect repeatable success against the vulnerable system.
Attack Requirements: None: The successful attack does not depend on the deployment and execution conditions of the vulnerable system. The attacker can expect to be able to reach the vulnerability and execute the exploit under all or most instances of the vulnerability.
Privileges Required: High: The attacker requires privileges that provide significant (e.g., administrative) control over the vulnerable system allowing full access to the vulnerable system’s settings and files.
User Interaction: Passive: Successful exploitation of this vulnerability requires limited interaction by the targeted user with the vulnerable system and the attacker’s payload. These interactions would be considered involuntary and do not require that the user actively subvert protections built into the vulnerable system.
Vulnerable system confidentiality: None: There is no loss of confidentiality within the Vulnerable System.
Vulnerable system integrity: Low: Modification of data is possible, but the attacker does not have control over the consequence of a modification, or the amount of modification is limited. The data modification does not have a direct, serious impact to the Vulnerable System.
Vulnerable system availability: None: There is no impact to availability within the Vulnerable System.
Subsequent system confidentiality: None: There is no loss of confidentiality within the Subsequent System or all confidentiality impact is constrained to the Vulnerable System.
Subsequent system integrity: None: There is no loss of integrity within the Subsequent System or all integrity impact is constrained to the Vulnerable System.
Subsequent system availability: None: There is no impact to availability within the Subsequent System or all availability impact is constrained to the Vulnerable System.

Definitions: FIRST CVSS v4.0 specification.

Exploitation evidence

Disclosed: evidence found.
CVE published 15 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 29 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
TecnickTCExam	Affected 16.0 – 16.6.0 7 affected builds	Fixed in–
GitHubtecnickcom/tcexam`pkg:github/tecnickcom/tcexam`Other threats	Affected 16.0 – 16.6.0 7 affected builds	Fixed in–

CPE configurations (1)

cpe:2.3:a:tecnick:tcexam:*:*:*:*:*:*:*:*

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AI-suggested

To mitigate CVE-2026-4169, organizations should upgrade Tecnick TCExam to version 16.6.1 or later, where the vulnerability is patched. In addition, administrators should enforce strict access controls and limit the number of users with administrative privileges to reduce the risk of insider threats. Implementing Content Security Policy (CSP) headers can help mitigate the impact of XSS by restricting script execution sources. Regularly auditing administrator activities and monitoring for unusual behavior can detect attempts to exploit this vulnerability. Web application firewalls (WAFs) configured to detect and block XSS payloads may provide additional protection. Finally, educating administrators about the risks of executing untrusted content and encouraging safe handling of exported XML data can reduce the likelihood of successful exploitation.

Description

CVE-2026-4169 is a cross-site scripting (XSS) vulnerability found in Tecnick TCExam versions up to 16.6.0, specifically in the XML export functionality for users. The flaw exists in the F_xml_export_users function within admin/code/tce_xml_users.php. Exploitation requires an attacker to have administrator privileges to both create and trigger the exploit, limiting its practical impact. The vulnerability allows injection of malicious scripts that could be executed in the context of an administrator's browser session. The vendor has released version 16.6.1 to address this issue.

Impact

The impact of CVE-2026-4169 is moderate due to the requirement that an attacker must already have administrator privileges to exploit the vulnerability. This limits the risk primarily to insider threats or scenarios where an administrator account is compromised. Successful exploitation could allow an attacker to execute arbitrary scripts in the context of another administrator’s browser session, potentially leading to session hijacking, unauthorized actions, or manipulation of administrative functions. However, since administrators already have extensive control over the platform, the incremental damage caused by this XSS is limited. The vulnerability does not affect confidentiality or availability directly and does not allow privilege escalation. Organizations with multiple administrators or shared administrative environments may face increased risk of lateral attacks or social engineering leveraging this flaw. The absence of known exploits in the wild reduces immediate threat urgency but does not eliminate the need for remediation.

References

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