HIGH
A remote code execution vulnerability exists in the way Microsoft Exchange software parses specially crafted email messages, aka "Microsoft Exchange Remote Code Execution Vulnerability." This affects Microsoft Exchange Server
Published Oct 10, 2018
7.8
HIGHCVSS 3.0
EPSS 19.27%
Description
A remote code execution vulnerability exists in the way Microsoft Exchange software parses specially crafted email messages, aka "Microsoft Exchange Remote Code Execution Vulnerability." This affects Microsoft Exchange Server.
Affected products
-
- Version 2013 Cumulative Update 21StatusaffectedConstraints-
- Version 2016 Cumulative Update 10StatusaffectedConstraints-
- 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 Exchange Server | n/a |
|
OR
- 2013
- 2016
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.
7.8 HIGH NVD
CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Attack Vector Local
Attack Complexity Low
Privileges Required None
User Interaction Required
Scope Unchanged
Confidentiality Impact High
Integrity Impact High
Availability Impact High
9.3 HIGH NVD
AV:N/AC:M/Au:N/C:C/I:C/A:C
Access Vector Network
Access Complexity Medium
Authentication None
Confidentiality Impact Complete
Integrity Impact Complete
Availability Impact Complete
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
19.27% 0.19268
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
EPSS probability 0.19268
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 (54 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 19.27% (0.19268) | 97.26th | v5 (v2026.06.15) |
| Sep 22, 2026 | 19.27% (0.19268) | 97.21th | v5 (v2026.06.15) |
| Sep 21, 2026 | 25.27% (0.25266) | 97.89th | v5 (v2026.06.15) |
| Sep 6, 2026 | 19.27% (0.19268) | 97.15th | v5 (v2026.06.15) |
| Sep 5, 2026 | 25.27% (0.25266) | 97.85th | v5 (v2026.06.15) |
| Aug 30, 2026 | 19.27% (0.19268) | 97.14th | v5 (v2026.06.15) |
| Aug 28, 2026 | 23.98% (0.23980) | 97.72th | v5 (v2026.06.15) |
| Aug 24, 2026 | 19.63% (0.19629) | 97.18th | v5 (v2026.06.15) |
| Aug 23, 2026 | 23.98% (0.23980) | 97.71th | v5 (v2026.06.15) |
| Jun 15, 2026 | 19.63% (0.19629) | 97.04th | v5 (v2026.06.15) |
| Feb 28, 2026 | 19.39% (0.19386) | 95.25th | v4 (v2025.03.14) |
| Feb 1, 2026 | 22.19% (0.22192) | 95.67th | v4 (v2025.03.14) |
| Nov 21, 2025 | 17.61% (0.17605) | 94.82th | v4 (v2025.03.14) |
| Nov 18, 2025 | 14.80% (0.14798) | 93.90th | v4 (v2025.03.14) |
| Mar 30, 2025 | 18.30% (0.18296) | 94.69th | v4 (v2025.03.14) |
| Mar 29, 2025 | 34.92% (0.34922) | 95.40th | v4 (v2025.03.14) |
| Mar 19, 2025 | 18.30% (0.18296) | 94.46th | v4 (v2025.03.14) |
| Mar 17, 2025 | 15.43% (0.15429) | 94.15th | v4 (v2025.03.14) |
| Dec 17, 2024 | 82.39% (0.82391) | 98.63th | v3 (v2023.03.01) |
| Oct 25, 2024 | 27.52% (0.27520) | 96.89th | v3 (v2023.03.01) |
| Sep 19, 2024 | 24.26% (0.24257) | 96.69th | v3 (v2023.03.01) |
| Aug 19, 2024 | 13.92% (0.13924) | 95.75th | v3 (v2023.03.01) |
| Jul 25, 2024 | 8.45% (0.08448) | 94.47th | v3 (v2023.03.01) |
| Jun 25, 2024 | 10.60% (0.10604) | 95.07th | v3 (v2023.03.01) |
| May 29, 2024 | 9.18% (0.09183) | 94.66th | v3 (v2023.03.01) |
| Mar 23, 2024 | 8.19% (0.08189) | 94.19th | v3 (v2023.03.01) |
| Mar 2, 2024 | 8.17% (0.08172) | 94.16th | v3 (v2023.03.01) |
| Jan 19, 2024 | 7.17% (0.07168) | 93.37th | v3 (v2023.03.01) |
| Jan 2, 2024 | 7.39% (0.07387) | 93.42th | v3 (v2023.03.01) |
| Nov 27, 2023 | 10.09% (0.10091) | 94.33th | v3 (v2023.03.01) |
| Oct 4, 2023 | 12.28% (0.12278) | 94.73th | v3 (v2023.03.01) |
| Sep 19, 2023 | 10.57% (0.10570) | 94.34th | v3 (v2023.03.01) |
| Jul 31, 2023 | 8.40% (0.08398) | 93.51th | v3 (v2023.03.01) |
| Jul 11, 2023 | 10.45% (0.10453) | 94.22th | v3 (v2023.03.01) |
| Jun 7, 2023 | 14.07% (0.14074) | 94.87th | v3 (v2023.03.01) |
| May 26, 2023 | 18.64% (0.18642) | 95.45th | v3 (v2023.03.01) |
| May 6, 2023 | 16.67% (0.16667) | 95.22th | v3 (v2023.03.01) |
| Apr 23, 2023 | 18.18% (0.18176) | 95.38th | v3 (v2023.03.01) |
| Mar 23, 2023 | 9.09% (0.09090) | 93.61th | v3 (v2023.03.01) |
| Mar 8, 2023 | 11.83% (0.11833) | 94.39th | v3 (v2023.03.01) |
| Mar 7, 2023 | 12.03% (0.12033) | 94.41th | v3 (v2023.03.01) |
| Mar 6, 2023 | 34.60% (0.34599) | 97.77th | v2 (v2022.01.01) |
| Jan 31, 2023 | 34.60% (0.34599) | 97.75th | v2 (v2022.01.01) |
| Nov 10, 2022 | 32.42% (0.32419) | 97.57th | v2 (v2022.01.01) |
| Sep 26, 2022 | 31.10% (0.31104) | 97.47th | v2 (v2022.01.01) |
| Aug 23, 2022 | 27.14% (0.27139) | 97.04th | v2 (v2022.01.01) |
| Jul 17, 2022 | 23.10% (0.23099) | 96.62th | v2 (v2022.01.01) |
| Apr 6, 2022 | 21.36% (0.21361) | 96.28th | v2 (v2022.01.01) |
| Apr 1, 2022 | 17.27% (0.17269) | 95.90th | v2 (v2022.01.01) |
| Feb 4, 2022 | 17.27% (0.17269) | 93.17th | v2 (v2022.01.01) |
| Feb 3, 2022 | 17.55% (0.17549) | 91.03th | v1 |
| Jan 6, 2022 | 17.55% (0.17549) | 90.92th | v1 |
| Sep 1, 2021 | 17.55% (0.17549) | 97.67th | v1 |
| Apr 14, 2021 | 17.55% (0.17549) | 0.00th | v1 |
Weaknesses (1)
References (3)
- http://www.securityfocus.com/bid/105491 vdb-entryx_refsource_BIDThird Party AdvisoryVDB Entry
- http://www.securitytracker.com/id/1041836 vdb-entryx_refsource_SECTRACKThird Party AdvisoryVDB Entry
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-8265 x_refsource_CONFIRMPatchVendor Advisory
| Link | Providers | Tags |
|---|---|---|
| http://www.securityfocus.com/bid/105491 | vdb-entryx_refsource_BIDThird Party AdvisoryVDB Entry | |
| http://www.securitytracker.com/id/1041836 | vdb-entryx_refsource_SECTRACKThird Party AdvisoryVDB Entry | |
| https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-8265 | x_refsource_CONFIRMPatchVendor Advisory |
Change history (0)
No recorded changes yet.
Sources
CVE.org / MITRE
Status PUBLISHED
Assigner microsoft
Published Oct 10, 2018
Updated Aug 5, 2024
Reserved Mar 14, 2018
Link CVE-2018-8265
CISA Vulnrichment
Updated n/a