CVE-2026-123975
Grid Community Toolkit globus-gss-assist before 12.9 Pre-Authentication Heap Out-of-Bounds Write
- High 8.7
Description
Grid Community Toolkit before 6.2.20261111 (globus-gss-assist before 12.9) contains a heap out-of-bounds write in globus_gss_assist_token_get_fd() triggered by SSLv2 record lengths below 3. Remote unauthenticated clients can send a crafted GSI handshake record to services like globus-gatekeeper and myproxy to corrupt heap memory and crash the service.
Key facts
- Published
- 13 Nov 2026
- Last changed
- 13 Nov 2026
- Assigned by
- VulnCheck
- EPSS
- 0.35% likely to be exploited in the next 30 days, higher than 29.117% of CVEs (scores for 15 Nov 2026)
Severity scores
Each score is shown as its source gave it. They are not averaged or merged.
- 8.7CVSS 4.0, Highfrom the CNA (VulnCheck)
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N - 7.5CVSS 3.1, Highfrom the CNA (VulnCheck)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Historical context and remediation
This reference retains the original CVE publication date. A recent record update does not mean a new attack occurred.
No separately sourced impact summary is available on this page yet. Consult the description, version data and dated exploitation evidence.
No explicit remediation statement is available on this page yet. Consult the original record and vendor references before choosing a fix.
Version statuses below come from the CNA. An “unaffected” version is not necessarily a currently supported release or proof of a patch date. EPSS is a dated risk estimate, not a count of historical attacks.
Affected products
| Vendor | Product | Versions |
|---|---|---|
| Grid Community Forum | Grid Community Toolkit |
|
| Grid Community Forum | globus-gss-assist |
|
Timeline
- 13 Nov 2026 Published