TI-2026-39115 Aliases CVE-2026-54211 GHSA-m98g-956p-4hxc

TeamDavid: Buffer Overflow in multiple form data parameters

MEDIUM 44CWE-787Published 2026-08-07 · Updated 2026-09-07

Key facts

Attack vector: Network
Privileges required: None
User interaction: None
Attack complexity: High
Attack requirements: None
Impact type: Code execution
Confidentiality · integrity · availability: High · High · High
Fix status: Fixed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-787 and the CVSS impact.

Summary

Tobit Laboratories AG TeamDavid's Webbox application’s endpoint “//serverClient_close.html” is vulnerable to a buffer overflow vulnerability in multiple form data parameters. By submitting excessively long values in these parameters, an authenticated attacker can trigger a server crash, resulting in denial of service. Depending on the stack state or if a stack canary can be disclosed through another vulnerability, this buffer overflow could potentially be exploited for remote code execution, leading to full compromise of the server. This issue affects TeamDavid before Rollout 528. Starting with Rollout 528 (June 30, 2026), the affected functionality is disabled by default and the vulnerabilities are therefore no longer exposed through this functionality.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV

EPSS 0.0064 50th percentileScored 2026-11-07

Fix Fixed TeamDavid (Tobit Laboratories AG): Rollout 528

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: None
Automatable: No
Technical impact: Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
Tobit Laboratories AG	TeamDavid	before Rollout 528	Rollout 528	Patch available	CNA

TeamDavid VendorTobit Laboratories AG Affected before Rollout 528 Fixed in Rollout 528 Patch available CNA

Remediation

Fix · CNA TeamDavid (Tobit Laboratories AG) Fixed in Rollout 528

Fixed in the same release

Records fixed by the same vendor advisory or release, as the CNA lists them.

Release · 2026-08-07
Tobit Laboratories TeamDavid Rollout 528
22 records Highest priority Priority HIGH 3 HIGH, 10 MEDIUM, 9 LOW
Other records, highest priority first
- TI-2026-39117 TeamDavid: Denial of Service via endpoint 'internalRestart'Priority HIGH 79
- TI-2026-39122 TeamDavid: Weak Cryptography and Insecure Password StoragePriority HIGH 77
- TI-2026-39116 TeamDavid: Buffer Overflow in JSON-parsingPriority HIGH 76
Show all 22 records →

Timeline

2026-10-02 Threatist record created from CVE-2026-54211
2026-10-03 Alias added: GHSA-m98g-956p-4hxc
2026-10-23 EPSS moved to the 50th–90th percentile

References

Advisory 1

https://labs.infoguard.ch/posts/22-cves-in-david-a-secure-m365-alternative/

Other 1

https://chayns.net/77892-10814/tapp/763210?postId=11454

TI-2026-39117 TeamDavid: Denial of Service via endpoint 'internalRestart' CVSS 4.0CRITICAL 9.2
TI-2026-39122 TeamDavid: Weak Cryptography and Insecure Password Storage CVSS 4.0HIGH 8.8
TI-2026-39116 TeamDavid: Buffer Overflow in JSON-parsing CVSS 4.0CRITICAL 9.5
TI-2026-39121 TeamDavid: Stored XSS in web application CVSS 4.0MEDIUM 5.3
TI-2026-39120 TeamDavid: Reflected Cross Site Scripting (XSS) via the 'EntryInfo' parameter CVSS 4.0MEDIUM 5.3
TI-2026-39119 TeamDavid: Open Redirect via the 'replyUrl' parameter CVSS 4.0MEDIUM 5.3

See all 21 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences