CRITICAL
The TLS stack in Mono before 3.12.1 allows remote attackers to have unspecified impact via vectors related to client-side SSLv2 fallback
Published Jan 8, 2018
9.8
CRITICALCVSS 3.0
EPSS 3.54%
Description
The TLS stack in Mono before 3.12.1 allows remote attackers to have unspecified impact via vectors related to client-side SSLv2 fallback.
Affected products
No data.
Configuration 1
- < 3.12.1
Configuration 2
- 7.0
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.
No CVSS v3.1 score for this CVE.
9.8 CRITICAL NVD
CVSS:3.0/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
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.
3.54% 0.03539
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
EPSS probability 0.03539
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 (15 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 3.54% (0.03539) | 88.89th | v5 (v2026.06.15) |
| Jun 15, 2026 | 3.61% (0.03607) | 87.96th | v5 (v2026.06.15) |
| Mar 30, 2025 | 5.27% (0.05268) | 89.03th | v4 (v2025.03.14) |
| Mar 29, 2025 | 7.61% (0.07612) | 86.16th | v4 (v2025.03.14) |
| Mar 17, 2025 | 5.27% (0.05268) | 89.28th | v4 (v2025.03.14) |
| Dec 12, 2024 | 1.53% (0.01530) | 87.59th | v3 (v2023.03.01) |
| Aug 4, 2023 | 1.53% (0.01530) | 85.40th | v3 (v2023.03.01) |
| Jul 11, 2023 | 1.94% (0.01942) | 87.06th | v3 (v2023.03.01) |
| Jun 1, 2023 | 3.30% (0.03301) | 89.91th | v3 (v2023.03.01) |
| May 8, 2023 | 4.26% (0.04263) | 90.98th | v3 (v2023.03.01) |
| Mar 7, 2023 | 5.51% (0.05506) | 92.00th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.32% (0.01319) | 71.27th | v2 (v2022.01.01) |
| Feb 23, 2023 | 1.32% (0.01319) | 71.23th | v2 (v2022.01.01) |
| Apr 1, 2022 | 1.32% (0.01319) | 69.22th | v2 (v2022.01.01) |
| Feb 4, 2022 | 1.32% (0.01319) | 44.98th | v2 (v2022.01.01) |
Weaknesses (1)
References (7)
- http://www.mono-project.com/news/2015/03/07/mono-tls-vulnerability/ x_refsource_CONFIRMVendor Advisory
- http://www.openwall.com/lists/oss-security/2015/03/17/9 mailing-listx_refsource_MLISTMailing ListThird Party Advisory
- http://www.securityfocus.com/bid/73256 vdb-entryx_refsource_BIDThird Party AdvisoryVDB Entry
- http://www.ubuntu.com/usn/USN-2547-1 vendor-advisoryx_refsource_UBUNTUThird Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1202869 x_refsource_CONFIRMIssue TrackingThird Party Advisory
- https://github.com/mono/mono/commit/b371da6b2d68b4cdd0f21d6342af6c42794f998b x_refsource_CONFIRMThird Party Advisory
- https://www.debian.org/security/2015/dsa-3202 vendor-advisoryx_refsource_DEBIANThird Party Advisory
| Link | Providers | Tags |
|---|---|---|
| http://www.mono-project.com/news/2015/03/07/mono-tls-vulnerability/ | x_refsource_CONFIRMVendor Advisory | |
| http://www.openwall.com/lists/oss-security/2015/03/17/9 | mailing-listx_refsource_MLISTMailing ListThird Party Advisory | |
| http://www.securityfocus.com/bid/73256 | vdb-entryx_refsource_BIDThird Party AdvisoryVDB Entry | |
| http://www.ubuntu.com/usn/USN-2547-1 | vendor-advisoryx_refsource_UBUNTUThird Party Advisory | |
| https://bugzilla.redhat.com/show_bug.cgi?id=1202869 | x_refsource_CONFIRMIssue TrackingThird Party Advisory | |
| https://github.com/mono/mono/commit/b371da6b2d68b4cdd0f21d6342af6c42794f998b | x_refsource_CONFIRMThird Party Advisory | |
| https://www.debian.org/security/2015/dsa-3202 | vendor-advisoryx_refsource_DEBIANThird Party Advisory |
Change history (0)
No recorded changes yet.
Sources
CVE.org / MITRE
Status PUBLISHED
Assigner mitre
Published Jan 8, 2018
Updated Aug 6, 2024
Reserved Mar 17, 2015
Link CVE-2015-2320
CISA Vulnrichment
Updated n/a