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Fencer Vulns
critical 9.8

CVE-2020-0618 kev+ ransomware in the critical feed json

A remote code execution vulnerability exists in Microsoft SQL Server Reporting Services when it incorrectly handles page requests, aka 'Mic…

published 2020-02-11 6 y ago modified 2026-08-15 2 mo ago also EUVD-2020-2113

cvss
9.8
version 3.1, CNA
cisa kev
Exploited
added 2024-09-18, used in ransomware
epss
99.0%
EPSS 99.0% chance of exploitation in 30 days, percentile 99.9%
public exploits
2
Metasploit, Exploit-DB, plus a Nuclei check

Summary

A remote code execution vulnerability exists in Microsoft SQL Server Reporting Services when it incorrectly handles page requests, aka 'Microsoft SQL Server Reporting Services Remote Code Execution Vulnerability'.

Patch / fix

cisa required action Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.

Timeline

  1. First public exploit (Metasploit exploit/windows/http/ssrs_navcorrector_viewstate)
  2. Published
  3. Added to CISA KEV
  4. CISA SSVC: exploitation active
  5. CISA patch deadline

Known exploited

Added
2 y ago
Patch by
2024-10-09 (2 y ago)
Ransomware
Known to be used in ransomware campaigns
Required action
Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
Vendor, product
Microsoft, SQL Server
CISA name
Microsoft SQL Server Reporting Services Remote Code Execution Vulnerability

Ransomware

Groups reported to have exploited it in intrusions.

  • Mallox ransomware gang

reported by trendmicro.com

Ransomware Vulnerability Matrix by BushidoUK (github.com/BushidoUK/Ransomware-Vulnerability-Matrix), reformatted per CVE. CC BY 4.0

CISA SSVC

Exploitation
Active, exploited in the wild
Automatable
no
Technical impact
total
Assessed
2 y ago

Exploit prediction

99.05% chance of exploitation in the next 30 days, higher than 99.9% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • Metasploit exploit/windows/http/ssrs_navcorrector_viewstate SQL Server Reporting Services (SSRS) ViewState Deserialization metasploit exploit, excellent rank, 2020-02-11
  • EDB-48816 Microsoft SQL Server Reporting Services 2016 - Remote Code Execution remote, 2020-09-17
  • Nuclei template Microsoft SQL Server Reporting Services - Remote Code Execution nuclei detection template
  • packetstormsecurity.com http://packetstormsecurity.com/files/156707/SQL-Server-Reporting-Services-SSRS-ViewState-Deserialization.html referenced PoC, tagged "exploit" by a source, unverified
  • packetstormsecurity.com http://packetstormsecurity.com/files/159216/Microsoft-SQL-Server-Reporting-Services-2016-Remote-Code-Execution.html referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
CISA ADP 3.1 9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
NVD 3.1 8.8 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CNA 3.1 9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
NVD 2.0 6.5 AV:N/AC:L/Au:S/C:P/I:P/A:P

Affected products

  • Microsoft Microsoft SQL Server
  • Microsoft Microsoft SQL Server 2014 Service Pack 3 for x64-based Systems (GDR)
  • Microsoft Microsoft SQL Server 2014 Service Pack 3 for x64-based Systems (CU)
  • Microsoft Microsoft SQL Server 2016 for x64-based Systems Service Pack 2 (GDR)
  • Microsoft Microsoft SQL Server 2014 Service Pack 3 for 32-bit Systems (GDR)
  • Microsoft Microsoft SQL Server 2014 Service Pack 3 for 32-bit Systems (CU)

Classification

Weakness
  • CWE-502 Deserialization of Untrusted Data
Technology feeds

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.