VulnerabilityPublished 25 Mar 2026

CVE-2026-23635: kiteworks Secure Data Forms · Unprotected Transport of Credentials

Affects kiteworks Secure Data FormsSource CVE Database V5

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Not known to be exploited · CVSS 6.5 Medium : upgrade to 9.2.1 when convenient.

Data as of 30 Oct 2026, 06:59 UTC

CVSS 3.1 base score

6.5Medium

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

EPSS: 0.3% chance of exploitation in 30 days – higher than 26% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch: Available – fixed in 9.2.1

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

Attack Vector: Network
Attack Complexity: High
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: High: A successful attack depends on conditions beyond the attacker's control. That is, a successful attack cannot be accomplished at will, but requires the attacker to invest in some measurable amount of effort in preparation or execution against the vulnerable component before a successful attack can be expected. For example, a successful attack may require an attacker to: gather knowledge about the environment in which the vulnerable target/component exists; prepare the target environment to improve exploit reliability; or inject themselves into the logical network path between the target and the resource requested by the victim in order to read and/or modify network communications (e.g., a man in the middle attack).
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 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

Upgrade kiteworks Secure Data Forms to 9.2.1.

Affected software

Product	Affected	Fixed in
kiteworksSecure Data Forms	Affected <9.2.1	Fixed in 9.2.1

AI-suggested

To mitigate this vulnerability, organizations should immediately upgrade Kiteworks Secure Data Forms to version 9.2.1 or later, where the security attribute misconfiguration has been fixed. Additionally, organizations should verify that all data transmissions involving credentials use strong encryption protocols such as TLS 1.2 or higher and that no fallback to insecure protocols is possible. Network segmentation and monitoring should be employed to detect unusual access patterns or credential use. Implementing multi-factor authentication (MFA) can reduce the impact of credential compromise. Regular security audits and configuration reviews of the Kiteworks environment should be conducted to ensure no other misconfigurations exist. Finally, educating users about secure credential handling and monitoring logs for suspicious activity can help detect exploitation attempts early.

Description

Kiteworks is a private data network (PDN). In Kiteworks Secure Data Forms prior to version 9.2.1, a misconfiguration of the security attributes could potentially lead to Unprotected Transport of Credentials under certain circumstances. Upgrade Kiteworks to version 9.2.1 or later to receive a patch.

Impact

The primary impact of this vulnerability is the potential exposure of user credentials during transmission, which can lead to unauthorized access if intercepted by attackers. This compromises confidentiality significantly and can also affect integrity to a lesser extent if credentials are altered or replayed. Although availability is not impacted, the breach of credentials can facilitate further attacks such as unauthorized data access, lateral movement within networks, and potential data exfiltration. Organizations using Kiteworks Secure Data Forms for sensitive data collection and transmission are at risk of credential theft, which can undermine trust and lead to regulatory compliance issues, especially in sectors handling personal or confidential information. The high attack complexity and lack of known exploits reduce immediate risk but do not eliminate the threat, especially in targeted attacks by skilled adversaries. Failure to patch could result in increased risk of credential interception in environments where network traffic is monitored or compromised.

CWE-523Unprotected Transport of Credentials (opens in a new tab)
Base weaknessOWASP Top 10 A04:2025: Cryptographic Failures (opens in a new tab)
Login pages do not use adequate measures to protect the user name and password while they are in transit from the client to the server.
Operation · System Configuration
Enforce SSL use for the login page or any page used to transmit user credentials or other sensitive information. Even if the entire site does not use SSL, it MUST use SSL for login. Additionally, to help prevent phishing attacks, make sure that SSL serves the login page.
OWASP Cheat Sheets
Forgot Password (opens in a new tab)
Content Security Policy (opens in a new tab)
Transport Layer Protection (opens in a new tab)
User Privacy Protection (opens in a new tab)
Password Storage (opens in a new tab)
OWASP ASVS 4.0.3
V2.7.4 (opens in a new tab)
V14.4.5 (opens in a new tab)
V2.8.5 (opens in a new tab)
Attack patterns
Session Sidejacking (opens in a new tab)
From MITRE CWE, MITRE CAPEC and OWASP (Top 10, OpenCRE).

References

github.com/kiteworks/security-advisories/security/advisories/GHSA-9hw2-6qp4-3v8f (opens in a new tab)

Community reviews

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Exploitation evidence

What to do

Affected software

Description

AI analysisMachine-generated, updated 25 Mar 2026, 17:32 UTC

WeaknessesCWE-523

Technical details

References

Community reviews

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