Security readout for executives and security teams
Plain-English summary
CVE-2020-0618 is a critical remote code execution flaw in Microsoft SQL Server Reporting Services. An unauthenticated network attacker could potentially run code by abusing how Reporting Services handles page requests. CISA lists it in the Known Exploited Vulnerabilities catalog, so this is not only theoretical.
Executive priority
High priority. This is a critical Microsoft server-side RCE with known exploitation in CISA KEV. Prioritize patch validation and exposure reduction for SSRS systems supporting business reporting, finance, operations, or customer-facing workflows.
Technical view
Microsoft describes this as an SSRS remote code execution vulnerability tied to incorrect handling of page requests. The CVSS 3.1 score is 9.8 with network attack vector, low complexity, no privileges, and no user interaction. The associated weakness is CWE-502, deserialization of untrusted data.
Likely exposure
Organizations running affected Microsoft SQL Server Reporting Services versions, especially internet-accessible or broadly reachable SSRS instances, should assume elevated risk until patch status is verified. The provided affected list includes SQL Server 2012 SP4, 2014 SP3, and 2016 SP2 variants.
Exploitation context
CISA KEV inclusion indicates known exploitation. The source bundle does not provide details on exploit method, targeting, scale, or whether exploitation is ongoing. Treat exposed SSRS systems as priority assets for verification and remediation.
Researcher notes
Evidence supports critical unauthenticated network RCE in SSRS and KEV status. The bundle does not include exploit details or exact fixed build numbers. Use MSRC as the authoritative source for affected/fixed versions and update applicability.
Mitigation direction
- Identify all Microsoft SQL Server Reporting Services deployments.
- Check each instance against the MSRC CVE-2020-0618 advisory.
- Apply applicable Microsoft security updates or vendor-directed remediation.
- Reduce unnecessary network exposure to SSRS instances.
- Prioritize internet-facing and high-value reporting servers first.
Validation and detection
- Inventory SSRS versions and service pack/CU/GDR levels.
- Confirm whether listed affected versions are present.
- Verify installed security updates against Microsoft guidance.
- Review exposure paths to SSRS from internet and internal networks.
- Check logs for unusual SSRS page request activity.
Public sources used
The source record changed after analysis. Treat this automated context as pending refresh.
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
CWE-502: Code execution behavior lookup
Code execution and unsafe deserialization weaknesses often justify reviewing execution behavior and process telemetry. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.
Open ATT&CK lookupExecution behavior lookup
The CVE wording references code or command execution, so execution technique review may help defensive triage. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.
Open ATT&CK lookupCVE-2020-0618 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- Critical
- CVSS
- 9.8 (3.1)
- Known Exploited
- Yes
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
CISA KEV status
SSVC decision data
CVSS vector scores
1 official scoreWe collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H3.95.9CISA-ADPVulnerability scoring details
Base CVSS 3.1 score
9.8CriticalVector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Vulnerability timeline
Timeline events are normalized from CVE metadata, CNA source timelines, ADP timelines, and KEV metadata when present.
- CVE reservedCVE Program
The CVE ID was reserved by the assigning CNA.
- CVE publishedCVE Program
The CVE record was published.
- Added to KEVCISA-ADP
CISA Known Exploited Vulnerabilities metadata lists this CVE as known exploited.
- CVE updatedCVE Program
The CVE record metadata indicates this as the latest update time.
ADP provider summaries
Source materials
- CVE List V5 sourceCVE List V5
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-0618CVE reference, microsoft · x_refsource_MISC
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2020-0618CVE reference, CISA-ADP · government-resource
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.
Deserialization of Untrusted Data
Deserialization of Untrusted Data represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.