CRITICAL
scheme/webauthn.c in Glewlwyd SSO server 2.x before 2.6.2 has a buffer overflow associated with a webauthn assertion
Published Mar 18, 2022
9.8
CRITICALCVSS 3.1
EPSS 1.56%
Description
scheme/webauthn.c in Glewlwyd SSO server 2.x before 2.6.2 has a buffer overflow associated with a webauthn assertion.
Affected products
No data.
- ≥ 2.0.0 · < 2.6.2
No data.
No Red Hat product state for this CVE.
No package ranges for this CVE.
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
9.8 CRITICAL NVD
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction None
Scope Unchanged
Confidentiality Impact High
Integrity Impact High
Availability Impact High
No CVSS v3.0 score for this CVE.
7.5 HIGH NVD
AV:N/AC:L/Au:N/C:P/I:P/A:P
Access Vector Network
Access Complexity Low
Authentication None
Confidentiality Impact Partial
Integrity Impact Partial
Availability Impact Partial
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
1.56% 0.01557
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
EPSS probability 0.01557
Score over time
2022–2026- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (12 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 1.56% (0.01557) | 74.27th | v5 (v2026.06.15) |
| Jun 15, 2026 | 1.50% (0.01496) | 70.74th | v5 (v2026.06.15) |
| Mar 17, 2025 | 0.09% (0.00090) | 23.46th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.18% (0.00182) | 56.84th | v3 (v2023.03.01) |
| Aug 29, 2023 | 0.16% (0.00160) | 51.96th | v3 (v2023.03.01) |
| Apr 20, 2023 | 0.14% (0.00140) | 48.18th | v3 (v2023.03.01) |
| Mar 25, 2023 | 0.12% (0.00124) | 45.22th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.10% (0.00105) | 41.34th | v3 (v2023.03.01) |
| Mar 6, 2023 | 0.89% (0.00885) | 27.89th | v2 (v2022.01.01) |
| Sep 10, 2022 | 0.89% (0.00885) | 26.24th | v2 (v2022.01.01) |
| Apr 1, 2022 | 0.89% (0.00885) | 24.24th | v2 (v2022.01.01) |
| Mar 18, 2022 | 0.89% (0.00885) | 11.43th | v2 (v2022.01.01) |
Weaknesses (1)
References (2)
- https://github.com/babelouest/glewlwyd/commit/4c5597c155bfbaf6491cf6b83479d241ae66940a x_refsource_MISCPatchThird Party Advisory
- https://github.com/babelouest/glewlwyd/releases/tag/v2.6.2 x_refsource_MISCRelease NotesThird Party Advisory
| Link | Providers | Tags |
|---|---|---|
| https://github.com/babelouest/glewlwyd/commit/4c5597c155bfbaf6491cf6b83479d241ae66940a | x_refsource_MISCPatchThird Party Advisory | |
| https://github.com/babelouest/glewlwyd/releases/tag/v2.6.2 | x_refsource_MISCRelease NotesThird Party Advisory |
Change history (0)
No recorded changes yet.
Sources
CVE.org / MITRE
Status PUBLISHED
Assigner mitre
Published Mar 18, 2022
Updated Aug 3, 2024
Reserved Mar 18, 2022
Link CVE-2022-27240
CISA Vulnrichment
Updated n/a