VulnerabilityPublished 25 Jun 2024Updated 2 Aug 2024

CVE-2024-37742: SEB · Improper Access Control

Affects SEBSource CVE Database V5

Not known to be exploited · CVSS 8.2 High.

Data as of 26 Oct 2026, 13:47 UTC

CVSS 3.1 base score

8.2High

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

EPSS: 0.5% chance of exploitation in 30 days – higher than 43% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.

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

Attack Vector: Network
Attack Complexity: Low
Privileges Required: None
User Interaction: None
Scope: Unchanged
Confidentiality: High
Integrity: Low
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: Low: Specialized access conditions or extenuating circumstances do not exist. An attacker can expect repeatable success against the vulnerable component.
Privileges Required: None: The attacker is unauthorized prior to attack, and therefore does not require any access to settings or files to carry out an attack.
User Interaction: None: The vulnerable system can be exploited without any interaction from any user.
Scope: Unchanged: An exploited vulnerability can only affect resources managed by the same security authority. In this case, the vulnerable component and the impacted component are either the same, or both are managed by the same security authority.
Confidentiality: High: There is total loss of confidentiality, resulting in all resources within the impacted component being divulged to the attacker. Alternatively, access to only some restricted information is obtained, but the disclosed information presents a direct, serious impact.
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 on 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 25 Jun 2024
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 26 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.
Weaponised: Public exploit code exists in Metasploit or Exploit-DB, 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
GitHubeteblue/SEB`pkg:github/eteblue/SEB`Other threats	Affected =3.5.0	Fixed in–

Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.

AI-suggested

Organizations should immediately assess their use of Safe Exam Browser version 3.5.0 on Windows and restrict or suspend its use until a patch or update is available. In the absence of an official patch, administrators should disable clipboard sharing features at the OS level or through group policies to prevent data leakage between SEB and the host system. Employ endpoint security solutions that can monitor and block unauthorized clipboard access or data exfiltration attempts. Consider deploying additional proctoring controls such as screen recording and behavioral analytics to detect suspicious activity during exams. Educate exam administrators and proctors about this vulnerability and the risks of clipboard sharing. Regularly check for updates from SEB developers and apply security patches promptly once released. For critical exams, consider alternative secure exam solutions with verified isolation mechanisms. Finally, conduct thorough post-exam audits to identify potential breaches or irregularities caused by this vulnerability.

Description

Insecure Access Control in Safe Exam Browser (SEB) = 3.5.0 on Windows. The vulnerability allows an attacker to share clipboard data between the SEB kiosk mode and the underlying system, compromising exam integrity. By exploiting this flaw, an attacker can bypass exam controls and gain an unfair advantage during exams.

Impact

The primary impact of CVE-2024-37742 is the compromise of confidentiality within secure exam environments. Attackers can access or manipulate clipboard data, potentially leaking exam questions or answers or injecting unauthorized content to cheat. This undermines the integrity of exams, leading to unfair advantages and invalid results. Educational institutions, certification authorities, and any organizations conducting high-stakes online assessments are at risk. The vulnerability does not affect system availability or cause denial of service but severely damages trust in the exam process. Because exploitation requires no privileges or user interaction and can be performed remotely, the scope of affected systems is broad wherever SEB 3.5.0 on Windows is deployed. This could lead to reputational damage, legal challenges, and financial losses for affected organizations. The lack of known exploits in the wild currently limits immediate widespread impact, but the high CVSS score indicates a strong potential for future exploitation if unmitigated.

CWE-284Improper Access Control (opens in a new tab)
Pillar weaknessCWE Top 25 (2025): #19OWASP Top 10 A01:2025: Broken Access Control (opens in a new tab)
The product does not restrict or incorrectly restricts access to a resource from an unauthorized actor.
MITRE discourages mapping vulnerabilities to this broad entry; the root cause is usually a more specific weakness.
Architecture and Design · Operation
Very carefully manage the setting, management, and handling of privileges. Explicitly manage trust zones in the software.
Architecture and Design · Separation of Privilege
Compartmentalize the system to have "safe" areas where trust boundaries can be unambiguously drawn. Do not allow sensitive data to go outside of the trust boundary and always be careful when interfacing with a compartment outside of the safe area.
OWASP Cheat Sheets
Docker Security (opens in a new tab)
Third Party Javascript Management (opens in a new tab)
Virtual Patching (opens in a new tab)
Authorization (opens in a new tab)
OWASP ASVS 4.0.3
V1.4.4 (opens in a new tab)
V1.4.5 (opens in a new tab)
V1.10.1 (opens in a new tab)
Attack patterns
Embedding Scripts within Scripts (opens in a new tab)
Modification of Windows Service Configuration (opens in a new tab)
Malicious Root Certificate (opens in a new tab)
Intent Spoof (opens in a new tab)
WebView Exposure (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 28 Feb 2026, 03:45 UTC

WeaknessesCWE-284

Technical details

References

Community reviews

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