HIGH
A remote code execution vulnerability exists when Skype for Business and Microsoft Lync clients fail to properly sanitize specially crafted content, aka "Remote Code Execution Vulnerability in Skype For Business and Lync." This affects Skype, Microsoft Lync
Published Jul 11, 2018
8.8
HIGHCVSS 3.0
EPSS 16.42%
Description
A remote code execution vulnerability exists when Skype for Business and Microsoft Lync clients fail to properly sanitize specially crafted content, aka "Remote Code Execution Vulnerability in Skype For Business and Lync." This affects Skype, Microsoft Lync.
Affected products
-
- Version 2013 Service Pack 1 (32-bit)StatusaffectedConstraints-
- Version 2013 Service Pack 1 (64-bit)StatusaffectedConstraints-
- Version
-
- Version Business 2016 (32-bit)StatusaffectedConstraints-
- Version Business 2016 (64-bit)StatusaffectedConstraints-
- Version
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
| Vendor | Product | Default status | Versions | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Microsoft | Microsoft Lync | n/a |
| |||||||||
| Microsoft | Skype | n/a |
|
OR
- n/a
- n/a
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.
8.8 HIGH NVD
CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction Required
Scope Unchanged
Confidentiality Impact High
Integrity Impact High
Availability Impact High
6.8 MEDIUM NVD
AV:N/AC:M/Au:N/C:P/I:P/A:P
Access Vector Network
Access Complexity Medium
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.
16.42% 0.16418
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 2, 2026.
EPSS probability 0.16418
Score over time
2021–2026- EPSS v1
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v1
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (39 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 2, 2026 | 16.42% (0.16418) | 96.89th | v5 (v2026.06.15) |
| Jun 15, 2026 | 16.62% (0.16620) | 96.60th | v5 (v2026.06.15) |
| Jun 13, 2026 | 32.39% (0.32386) | 96.97th | v4 (v2025.03.14) |
| Mar 16, 2026 | 28.09% (0.28094) | 96.41th | v4 (v2025.03.14) |
| Jan 25, 2026 | 34.04% (0.34040) | 96.85th | v4 (v2025.03.14) |
| Nov 29, 2025 | 35.11% (0.35114) | 96.85th | v4 (v2025.03.14) |
| Nov 21, 2025 | 29.06% (0.29059) | 96.37th | v4 (v2025.03.14) |
| Nov 18, 2025 | 32.54% (0.32543) | 96.63th | v4 (v2025.03.14) |
| Nov 2, 2025 | 29.06% (0.29059) | 96.37th | v4 (v2025.03.14) |
| Mar 30, 2025 | 23.80% (0.23804) | 95.55th | v4 (v2025.03.14) |
| Mar 29, 2025 | 37.21% (0.37208) | 95.67th | v4 (v2025.03.14) |
| Mar 19, 2025 | 23.80% (0.23804) | 95.34th | v4 (v2025.03.14) |
| Mar 17, 2025 | 30.18% (0.30180) | 96.28th | v4 (v2025.03.14) |
| Feb 11, 2025 | 47.59% (0.47587) | 97.60th | v3 (v2023.03.01) |
| Dec 17, 2024 | 50.69% (0.50687) | 97.63th | v3 (v2023.03.01) |
| Jul 26, 2024 | 11.08% (0.11081) | 95.20th | v3 (v2023.03.01) |
| May 20, 2024 | 9.01% (0.09007) | 94.58th | v3 (v2023.03.01) |
| Apr 25, 2024 | 12.26% (0.12264) | 95.31th | v3 (v2023.03.01) |
| Mar 26, 2024 | 17.70% (0.17704) | 96.03th | v3 (v2023.03.01) |
| Feb 28, 2024 | 17.48% (0.17477) | 95.95th | v3 (v2023.03.01) |
| Jan 10, 2024 | 15.77% (0.15770) | 95.42th | v3 (v2023.03.01) |
| Dec 22, 2023 | 20.73% (0.20733) | 95.94th | v3 (v2023.03.01) |
| Dec 1, 2023 | 19.34% (0.19342) | 95.76th | v3 (v2023.03.01) |
| Nov 9, 2023 | 21.15% (0.21150) | 95.91th | v3 (v2023.03.01) |
| Oct 19, 2023 | 27.17% (0.27174) | 96.23th | v3 (v2023.03.01) |
| Jul 8, 2023 | 21.15% (0.21150) | 95.76th | v3 (v2023.03.01) |
| Jul 4, 2023 | 27.09% (0.27089) | 96.14th | v3 (v2023.03.01) |
| Jun 1, 2023 | 38.97% (0.38966) | 96.68th | v3 (v2023.03.01) |
| May 16, 2023 | 37.67% (0.37674) | 96.64th | v3 (v2023.03.01) |
| May 8, 2023 | 34.37% (0.34372) | 96.45th | v3 (v2023.03.01) |
| Mar 7, 2023 | 27.53% (0.27534) | 96.06th | v3 (v2023.03.01) |
| Mar 6, 2023 | 42.81% (0.42807) | 98.30th | v2 (v2022.01.01) |
| May 23, 2022 | 42.81% (0.42807) | 98.14th | v2 (v2022.01.01) |
| Apr 16, 2022 | 40.13% (0.40133) | 97.97th | v2 (v2022.01.01) |
| Feb 4, 2022 | 37.74% (0.37741) | 97.20th | v2 (v2022.01.01) |
| Feb 3, 2022 | 21.04% (0.21041) | 94.24th | v1 |
| Jan 6, 2022 | 21.04% (0.21041) | 94.18th | v1 |
| Sep 1, 2021 | 21.04% (0.21041) | 97.94th | v1 |
| Apr 14, 2021 | 21.04% (0.21041) | 0.00th | v1 |
Weaknesses (1)
References (4)
- http://www.securityfocus.com/bid/104624 vdb-entryx_refsource_BIDThird Party AdvisoryVDB Entry
- http://www.securitytracker.com/id/1041259 vdb-entryx_refsource_SECTRACKThird Party AdvisoryVDB Entry
- http://www.securitytracker.com/id/1041260 vdb-entryx_refsource_SECTRACKThird Party AdvisoryVDB Entry
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-8311 x_refsource_CONFIRMVendor Advisory
| Link | Providers | Tags |
|---|---|---|
| http://www.securityfocus.com/bid/104624 | vdb-entryx_refsource_BIDThird Party AdvisoryVDB Entry | |
| http://www.securitytracker.com/id/1041259 | vdb-entryx_refsource_SECTRACKThird Party AdvisoryVDB Entry | |
| http://www.securitytracker.com/id/1041260 | vdb-entryx_refsource_SECTRACKThird Party AdvisoryVDB Entry | |
| https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-8311 | x_refsource_CONFIRMVendor Advisory |
Change history (0)
No recorded changes yet.
Sources
CVE.org / MITRE
Status PUBLISHED
Assigner microsoft
Published Jul 11, 2018
Updated Aug 5, 2024
Reserved Mar 14, 2018
Link CVE-2018-8311
CISA Vulnrichment
Updated n/a