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CVE-2018-0886

The Credential Security Support Provider protocol (CredSSP) in Microsoft Windows Server 2008 SP2...

7.0 HighPublic exploitFix available

The Credential Security Support Provider protocol (CredSSP) in Microsoft Windows Server 2008 SP2 and R2 SP1, Windows 7 SP1, Windows 8.1 and RT 8.1, Windows Server 2012 and R2, Windows 10 Gold, 1511, 1607, 1703, and 1709 Windows Server 2016 and Windows Server, version 1709 allows a remote code execution vulnerability due to how CredSSP validates request during the authentication process, aka "CredSSP Remote Code Execution Vulnerability".

Attack profile

How easy it is to exploit

Attack vector
Local
Complexity
High
Privileges needed
None
User interaction
Required

What an attacker can affect

Confidentiality
High
Integrity
High
Availability
High

Exploit likelihood

82.0%Up 16.2 points since Apr 14, 2021
90%50%10%1%

What each source reports

NVD Score used 7.0

The Credential Security Support Provider protocol (CredSSP) in Microsoft Windows Server 2008 SP2 and R2 SP1, Windows 7 SP1, Windows 8.1 and RT 8.1, Windows Server 2012 and R2, Windows 10 Gold, 1511, 1607, 1703, and 1709 Windows Server 2016 and Windows Server, version 1709 allows a remote code execution vulnerability due to how CredSSP validates request during the authentication process, aka "CredSSP Remote Code Execution Vulnerability".

Record
CVE-2018-0886
CVSS 3.0
7.0 HighCVSS:3.0/AV:L/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
CVSS 2.0
7.6 HighAV:N/AC:H/Au:N/C:C/I:C/A:C
Weakness
CWE-287
Updated
2026-11-02
CVE List No score

The Credential Security Support Provider protocol (CredSSP) in Microsoft Windows Server 2008 SP2 and R2 SP1, Windows 7 SP1, Windows 8.1 and RT 8.1, Windows Server 2012 and R2, Windows 10 Gold, 1511, 1607, 1703, and 1709 Windows Server 2016 and Windows Server, version 1709 allows a remote code execution vulnerability due to how CredSSP validates request during the authentication process, aka "CredSSP Remote Code Execution Vulnerability".

Record
CVE-2018-0886
Updated
2026-11-02
EUVDEUVD-2018-1677 No score

The Credential Security Support Provider protocol (CredSSP) in Microsoft Windows Server 2008 SP2 and R2 SP1, Windows 7 SP1, Windows 8.1 and RT 8.1, Windows Server 2012 and R2, Windows 10 Gold, 1511, 1607, 1703, and 1709 Windows Server 2016 and Windows Server, version 1709 allows a remote code execution vulnerability due to how CredSSP validates request during the authentication process, aka "CredSSP Remote Code Execution Vulnerability".

Record
EUVD-2018-1677
Updated
2026-11-03
GitHub AdvisoriesGHSA-hrh9-4g5w-7q9j 7.0

The Credential Security Support Provider protocol (CredSSP) in Microsoft Windows Server 2008 SP2...

The Credential Security Support Provider protocol (CredSSP) in Microsoft Windows Server 2008 SP2 and R2 SP1, Windows 7 SP1, Windows 8.1 and RT 8.1, Windows Server 2012 and R2, Windows 10 Gold, 1511, 1607, 1703, and 1709 Windows Server 2016 and Windows Server, version 1709 allows a remote code execution vulnerability due to how CredSSP validates request during the authentication process, aka "CredSSP Remote Code Execution Vulnerability".

Record
GHSA-hrh9-4g5w-7q9j
CVSS 3.0
7.0 HighCVSS:3.0/AV:L/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
Weakness
CWE-287
Updated
2026-11-02
OSVopenSUSE-SU-2019:0325-1 No score

Security update for freerdp

This update for freerdp to version 2.0.0~rc4 fixes the following issues:

Security issues fixed:

  • CVE-2018-0886: Fix a remote code execution vulnerability (CredSSP) (bsc#1085416, bsc#1087240, bsc#1104918)
  • CVE-2018-8789: Fix several denial of service vulnerabilities in the in the NTLM Authentication module (bsc#1117965)
  • CVE-2018-8785: Fix a potential remote code execution vulnerability in the zgfx_decompress function (bsc#1117967)
  • CVE-2018-8786: Fix a potential remote code execution vulnerability in the update_read_bitmap_update function (bsc#1117966)
  • CVE-2018-8787: Fix a potential remote code execution vulnerability in the gdi_Bitmap_Decompress function (bsc#1117964)
  • CVE-2018-8788: Fix a potential remote code execution vulnerability in the nsc_rle_decode function (bsc#1117963)
  • CVE-2018-8784: Fix a potential remote code execution vulnerability in the zgfx_decompress_segment function (bsc#1116708)
  • CVE-2018-1000852: Fixed a remote memory access in the drdynvc_process_capability_request function (bsc#1120507)

Other issues:

  • Upgraded to version 2.0.0-rc4 (FATE#326739)
  • Security and stability improvements, including bsc#1103557 and bsc#1112028
  • gateway: multiple fixes and improvements
  • client/X11: support for rail (remote app) icons was added
  • The licensing code was re-worked: Per-device licenses are now saved on the client and used on re-connect:
    WARNING: this is a change in FreeRDP behavior regarding licensing. If the old behavior is required, or no licenses should be saved use the new command line option +old-license (gh#/FreeRDP/FreeRDP#4979)
  • Improved order handling - only orders that were enable during capability exchange are accepted. WARNING and NOTE: some servers do improperly send orders that weren't negotiated, for such cases the new command line option /relax-order-checks was added to disable the strict order checking. If connecting to xrdp the options /relax-order-checks and +glyph-cache are required. (gh#/FreeRDP/FreeRDP#4926)
  • Fixed automount issues
  • Fixed several audio and microphone related issues
  • Fixed X11 Right-Ctrl ungrab feature
  • Fixed race condition in rdpsnd channel server.
  • Disabled SSE2 for ARM and powerpc

This update was imported from the SUSE:SLE-15:Update update project.

Record
openSUSE-SU-2019:0325-1
Updated
2026-11-02
OSVopenSUSE-SU-2024:10768-1 No score

freerdp-2.4.0-2.1 on GA media

These are all security issues fixed in the freerdp-2.4.0-2.1 package on the GA media of openSUSE Tumbleweed.

Record
openSUSE-SU-2024:10768-1
Updated
2026-11-02
Show 5 moreShow less
OSVopenSUSE-SU-2024:12385-1 No score

python310-pyspnego-0.5.0-1.1 on GA media

These are all security issues fixed in the python310-pyspnego-0.5.0-1.1 package on the GA media of openSUSE Tumbleweed.

Record
openSUSE-SU-2024:12385-1
Updated
2026-11-02
OSVopenSUSE-SU-2025:15103-1 No score

python311-pyspnego-0.11.2-1.4 on GA media

These are all security issues fixed in the python311-pyspnego-0.11.2-1.4 package on the GA media of openSUSE Tumbleweed.

Record
openSUSE-SU-2025:15103-1
Updated
2026-11-02
OSVSUSE-SU-2019:0134-1 No score

Security update for freerdp

This update for freerdp fixes the following issues:

Security issues fixed:

  • CVE-2018-0886: Fix a remote code execution vulnerability (CredSSP) (bsc#1085416, bsc#1087240, bsc#1104918)
  • CVE-2018-8789: Fix several denial of service vulnerabilities in the in the NTLM Authentication module (bsc#1117965)
  • CVE-2018-8785: Fix a potential remote code execution vulnerability in the zgfx_decompress function (bsc#1117967)
  • CVE-2018-8786: Fix a potential remote code execution vulnerability in the update_read_bitmap_update function (bsc#1117966)
  • CVE-2018-8787: Fix a potential remote code execution vulnerability in the gdi_Bitmap_Decompress function (bsc#1117964)
  • CVE-2018-8788: Fix a potential remote code execution vulnerability in the nsc_rle_decode function (bsc#1117963)
  • CVE-2018-8784: Fix a potential remote code execution vulnerability in the zgfx_decompress_segment function (bsc#1116708)
  • CVE-2018-1000852: Fixed a remote memory access in the drdynvc_process_capability_request function (bsc#1120507)
Record
SUSE-SU-2019:0134-1
Updated
2026-11-02
OSVSUSE-SU-2019:0539-1 No score

Security update for freerdp

This update for freerdp to version 2.0.0~rc4 fixes the following issues:

Security issues fixed:

  • CVE-2018-0886: Fix a remote code execution vulnerability (CredSSP) (bsc#1085416, bsc#1087240, bsc#1104918)
  • CVE-2018-8789: Fix several denial of service vulnerabilities in the in the NTLM Authentication module (bsc#1117965)
  • CVE-2018-8785: Fix a potential remote code execution vulnerability in the zgfx_decompress function (bsc#1117967)
  • CVE-2018-8786: Fix a potential remote code execution vulnerability in the update_read_bitmap_update function (bsc#1117966)
  • CVE-2018-8787: Fix a potential remote code execution vulnerability in the gdi_Bitmap_Decompress function (bsc#1117964)
  • CVE-2018-8788: Fix a potential remote code execution vulnerability in the nsc_rle_decode function (bsc#1117963)
  • CVE-2018-8784: Fix a potential remote code execution vulnerability in the zgfx_decompress_segment function (bsc#1116708)
  • CVE-2018-1000852: Fixed a remote memory access in the drdynvc_process_capability_request function (bsc#1120507)

Other issues:

  • Upgraded to version 2.0.0-rc4 (FATE#326739)
  • Security and stability improvements, including bsc#1103557 and bsc#1112028
  • gateway: multiple fixes and improvements
  • client/X11: support for rail (remote app) icons was added
  • The licensing code was re-worked: Per-device licenses are now saved on the client and used on re-connect:
    WARNING: this is a change in FreeRDP behavior regarding licensing. If the old behavior is required, or no licenses should be saved use the new command line option +old-license (gh#/FreeRDP/FreeRDP#4979)
  • Improved order handling - only orders that were enable during capability exchange are accepted. WARNING and NOTE: some servers do improperly send orders that weren't negotiated, for such cases the new command line option /relax-order-checks was added to disable the strict order checking. If connecting to xrdp the options /relax-order-checks and +glyph-cache are required. (gh#/FreeRDP/FreeRDP#4926)
  • Fixed automount issues
  • Fixed several audio and microphone related issues
  • Fixed X11 Right-Ctrl ungrab feature
  • Fixed race condition in rdpsnd channel server.
  • Disabled SSE2 for ARM and powerpc
Record
SUSE-SU-2019:0539-1
Updated
2026-11-02
OSVSUSE-SU-2020:2272-1 No score

Security update for freerdp

This update for freerdp fixes the following issues:

freerdp was updated to version 2.1.2 (bsc#1171441,bsc#1173247 and jsc#ECO-2006):

  • CVE-2020-11017: Fixed a double free which could have denied the server's service.
  • CVE-2020-11018: Fixed an out of bounds read which a malicious clients could have triggered.
  • CVE-2020-11019: Fixed an issue which could have led to denial of service if logger was set to 'WLOG_TRACE'.
  • CVE-2020-11038: Fixed a buffer overflow when /video redirection was used.
  • CVE-2020-11039: Fixed an issue which could have allowed arbitrary memory read and write when USB redirection was enabled.
  • CVE-2020-11040: Fixed an out of bounds data read in clear_decompress_subcode_rlex.
  • CVE-2020-11041: Fixed an issue with the configuration for sound backend which could have led to server's denial of service.
  • CVE-2020-11043: Fixed an out of bounds read in rfx_process_message_tileset.
  • CVE-2020-11085: Fixed an out of bounds read in cliprdr_read_format_list.
  • CVE-2020-11086: Fixed an out of bounds read in ntlm_read_ntlm_v2_client_challenge.
  • CVE-2020-11087: Fixed an out of bounds read in ntlm_read_AuthenticateMessage.
  • CVE-2020-11088: Fixed an out of bounds read in ntlm_read_NegotiateMessage.
  • CVE-2020-11089: Fixed an out of bounds read in irp function family.
  • CVE-2020-11095: Fixed a global out of bounds read in update_recv_primary_order.
  • CVE-2020-11096: Fixed a global out of bounds read in update_read_cache_bitmap_v3_order.
  • CVE-2020-11097: Fixed an out of bounds read in ntlm_av_pair_get.
  • CVE-2020-11098: Fixed an out of bounds read in glyph_cache_put.
  • CVE-2020-11099: Fixed an out of bounds Read in license_read_new_or_upgrade_license_packet.
  • CVE-2020-11521: Fixed an out of bounds write in planar.c (bsc#1171443).
  • CVE-2020-11522: Fixed an out of bounds read in gdi.c (bsc#1171444).
  • CVE-2020-11523: Fixed an integer overflow in region.c (bsc#1171445).
  • CVE-2020-11524: Fixed an out of bounds write in interleaved.c (bsc#1171446).
  • CVE-2020-11525: Fixed an out of bounds read in bitmap.c (bsc#1171447).
  • CVE-2020-11526: Fixed an out of bounds read in update_recv_secondary_order (bsc#1171674).
  • CVE-2020-13396: Fixed an Read in ntlm_read_ChallengeMessage.
  • CVE-2020-13397: Fixed an out of bounds read in security_fips_decrypt due to uninitialized value.
  • CVE-2020-13398: Fixed an out of bounds write in crypto_rsa_common.
  • CVE-2020-4030: Fixed an out of bounds read in TrioParse.
  • CVE-2020-4031: Fixed a use after free in gdi_SelectObject.
  • CVE-2020-4032: Fixed an integer casting in update_recv_secondary_order.
  • CVE-2020-4033: Fixed an out of bound read in RLEDECOMPRESS.
  • Fixed an issue where freerdp failed with -fno-common (bsc#1169748).
  • Fixed an issue where USB redirection with FreeRDP was not working (bsc#1169679).
  • Fixed an issue where freerdp could not start (bsc#1129193).
  • Fixed an issue where copy and paste between remote host was transforming text to chinese (bsc#1004108).
  • Added pulse support (bsc#1090677).

Additionally, the following issue was fixed:

  • CVE-2020-15103: Fix integer overflow due to missing input sanitation in rdpegfx channel (bsc#1174321).
Record
SUSE-SU-2020:2272-1
Updated
2026-11-02

Affected products

Affected packages

Affected packages
PackageAffectedFixed
freerdp
SUSE:Linux Enterprise Desktop 12 SP3
before 2.0.0~git.1463131968.4e66df7-12.8.1
2.0.0~git.1463131968.4e66df7-12.8.1
freerdp
SUSE:Linux Enterprise Desktop 12 SP4
before 2.0.0~git.1463131968.4e66df7-12.8.1
2.0.0~git.1463131968.4e66df7-12.8.1
freerdp
SUSE:Linux Enterprise Software Development Kit 12 SP3
before 2.0.0~git.1463131968.4e66df7-12.8.1
2.0.0~git.1463131968.4e66df7-12.8.1
freerdp
SUSE:Linux Enterprise Software Development Kit 12 SP4
before 2.0.0~git.1463131968.4e66df7-12.8.1
2.0.0~git.1463131968.4e66df7-12.8.1
freerdp
SUSE:Linux Enterprise Workstation Extension 12 SP3
before 2.0.0~git.1463131968.4e66df7-12.8.1
2.0.0~git.1463131968.4e66df7-12.8.1
freerdp
SUSE:Linux Enterprise Workstation Extension 12 SP4
before 2.0.0~git.1463131968.4e66df7-12.8.1
2.0.0~git.1463131968.4e66df7-12.8.1
freerdp
SUSE:Linux Enterprise Workstation Extension 15
before 2.0.0~rc4-3.3.1
2.0.0~rc4-3.3.1
freerdp
SUSE:Linux Enterprise Software Development Kit 12 SP5
before 2.1.2-12.20.1
2.1.2-12.20.1
freerdp
SUSE:Linux Enterprise Workstation Extension 12 SP5
before 2.1.2-12.20.1
2.1.2-12.20.1
vinagre
SUSE:Linux Enterprise Workstation Extension 12 SP5
before 3.20.2-16.3.3
3.20.2-16.3.3
freerdp2
openSUSE:Tumbleweed
before 2.4.0-2.1
2.4.0-2.1
python-pyspnego
openSUSE:Tumbleweed
before 0.5.0-1.1
0.5.0-1.1
python-pyspnego
openSUSE:Tumbleweed
before 0.11.2-1.4
0.11.2-1.4

Public exploits

Links only. Every CVE stores no exploit code.

Public exploits
SourceLinkDate
Exploit-DBMicrosoft Credential Security Support Provider - Remote Code Execution2018-04-13
PoC in GitHubpreempt/credssp2018-04-02

History

History
RecordedChangedSources
aliases, productsEUVD
first indexedCVE List, Exploit-DB, GitHub Advisories, NVD, OSV, PoC in GitHub

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2018-0886 is a high vulnerability (CVSS 7.0) in Microsoft Windows, published March 14, 2018. Public exploit code exists. EPSS puts the chance of exploitation in the next 30 days at 82.0%, the 99th percentile. Fixed in freerdp 2.0.0~git.1463131968.4e66df7-12.8.1.

References

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