CVE Intelligence
High Input validation

CVE-2026-20967 — System Center Operations Manager (SCOM) Elevation of Privilege Vulnerability

Improper input validation in System Center Operations Manager allows an authorized attacker to elevate privileges over a network.

Published Mar 10, 2026 · Updated Oct 13, 2026 · Sources: NIST National Vulnerability Database, CVE Program (cve.org) e CISA ADP · CNA: microsoft

Who exploits it and how urgent it is

A 0–100 score combining confirmed exploitation, ransomware and APT use, public exploits, EPSS and severity.

No exploitation signal in the sources consulted so far.
How the score was calculated
  • EPSS 1.1% (30-day exploitation probability)+10
  • Technical severity (high)+6

The score orders the patch queue; it does not replace your asset context (internet exposure, criticality, compensating controls).

Triage

Is it exploited, how likely is exploitation, what does it touch, and how severe do the sources call it.

Exploitation
Not confirmed
Not in CISA KEV — an absence of record, not proof it is unexploited.
EPSS FIRST
1.1%
ahead of 65% of scored CVEs · Oct 14, 2026
Affects
Microsoft
System Center Operations Manager and 3 more
CVSS base
8.8
High · 2 source(s)

CISA SSVC assessment CISA

Three decision points CISA publishes for the CVEs it assesses (SSVC 2.0.3). A stakeholder decision, not a severity score.

Exploitation
None
none · proof-of-concept · active
Automatable
No
can an attacker script the kill-chain steps
Technical impact
Total
partial · total control of the vulnerable component

Remediation

Fixes and mitigations documented by the sources — linked to the original advisory.

No fix documented by the sources we poll. That does not mean none exists: check the vendor advisory.

First 24 hours

Ordered from the record’s own fields — exposure first, because you cannot patch what you have not found. A rule-generated starting point.

  1. Identify exposed assets running the affected vendor/product/version combinations (Microsoft System Center Operations Manager, Microsoft System Center Operations Manager 2019, Microsoft System Center Operations Manager 2022…).
  2. No fix documented in the sources: reduce exposure and monitor the vendor advisory.
  3. Search available logs for exploit probes matching the vulnerability class (input validation), errors and authentication anomalies.

Affected scope

Vendor, product and versions as the sources word them.

VendorProductVersionsStatusSource
Microsoft System Center Operations Manager version 2019-update_rollup_1version 2025-update_rollup_1version 2025version 2022-update_rollup_3version 2022-update_rollup_2_hotfixversion 2022-update_rollup_2version 2022-update_rollup_1_hotfixversion 2022-update_rollup_1
and 12 more version 2022version 2019-update_rollup_6version 2019-update_rollup_5_hotfixversion 2019-update_rollup_5version 2019-update_rollup_4_hotfixversion 2019-update_rollup_4version 2019-update_rollup_3_hotfixversion 2019-update_rollup_3version 2019-update_rollup_2_hotfixversion 2019-update_rollup_2version 2019-update_rollup_1_hotfixversion 2019
Vulnerable NIST National Vulnerability Database
Microsoft System Center Operations Manager 2019 ≥ 10.19.0 and < 10.19.10658.0 Vulnerable CVE Program (cve.org) e CISA ADP
Microsoft System Center Operations Manager 2022 ≥ 10.22.0 and < 10.22.11951.0 Vulnerable CVE Program (cve.org) e CISA ADP
Microsoft System Center Operations Manager 2025 ≥ 1.0.0 and < 10.25.10377.0 Vulnerable CVE Program (cve.org) e CISA ADP

Attack characteristics

The CVSS vector, decoded. It describes the attack, not your exposure to it.

Attack vector
Network
Attack complexity
Low
Privileges required
Low
User interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

Every base score collected

Sources score independently and may disagree; each row says who scored it and under which version.

ScoreVersionSeverityExpl.ImpactScored by
8.8 CVSS 3.1 High 2.8 5.9 secure@microsoft.com via NIST National Vulnerability Database
8.8 CVSS 3.1 High — — microsoft via CVE Program (cve.org) e CISA ADP
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H (score shown at the top: secure@microsoft.com)

Weakness MITRE

Weakness class according to MITRE’s CWE catalog.

CWE-20 · Improper Input Validation

Other CVEs with this weakness →

EPSS over time FIRST

Oct 13, 2026 → Oct 14, 2026 · 2 reading(s) · max 1.10%

Detection

Read off the CVSS vector and the weakness class. Starting points, not tested rules.

  • Prioritize edge telemetry for the network-reachable component (proxy, WAF, IDS/IPS).
web/proxy/WAF logsnetwork IDS/IPS

Timeline

What happened to this CVE, newest first.

  • 2026
  • Affected products added · microsoft/system center operations manager 2019, microsoft/system center operations manager 2022, microsoft/system cente
    Oct 13, 2026 · CVE Program (cve.org) e CISA ADP
  • SSVC assessment updated
    Oct 13, 2026 · CVE Program (cve.org) e CISA ADP
  • Record published
    Oct 13, 2026
  • CVSS changed · 8.8
    Oct 13, 2026 · NIST National Vulnerability Database
  • Source status changed · → Analyzed
    Oct 13, 2026 · NIST National Vulnerability Database
  • Record created in this database
    Oct 13, 2026 · NIST National Vulnerability Database
  • CVE published
    Mar 10, 2026 · microsoft

Source activity

Repeated readings are counted rather than listed.

  • 1× Official description updated · Oct 13, 2026 – Oct 13, 2026

References

1 on the record

Elsewhere on this site

Microsoft
every CVE for this vendor
Input validation
same class
CWE-20
other pages naming this weakness

Related CVEs (same products)

  • CVE-2021-38647 Microsoft Open Management Infrastructure (OMI) Remote Code Execution Vulnerability KEV Sep 15, 2021
  • CVE-2021-38649 Microsoft Open Management Infrastructure (OMI) Privilege Escalation Vulnerability KEV Sep 15, 2021
  • CVE-2021-38648 Microsoft Open Management Infrastructure (OMI) Privilege Escalation Vulnerability KEV Sep 15, 2021
  • CVE-2021-38645 Microsoft Open Management Infrastructure (OMI) Privilege Escalation Vulnerability KEV Sep 15, 2021

Not in any source we poll

Listed rather than left blank: an empty field and an unmeasured one look identical on screen, and only one is a reason to look elsewhere.

  • No fixed version, patch or mitigation documented.
  • No confirmed IOCs, IP addresses, domains, file hashes, or malware artifacts supplied.
  • No organization-specific asset inventory, compensating-control status, or patch deployment evidence supplied.
  • No exploit packet captures, log samples, or incident case IDs supplied.

Answered from this record

Text assembled only from the fields above — no additional claims.

What should defenders know first?

CVE-2026-20967 is "System Center Operations Manager (SCOM) Elevation of Privilege Vulnerability", rated High. It affects System Center Operations Manager (Microsoft); versions are in the scope table. It is not in CISA KEV, which does not rule out exploitation. CVSS 8.8 describes technical severity. EPSS 1.10% estimates the probability of exploitation in 30 days; neither replaces your asset context. First verify whether exposed or business-critical assets run the affected versions, apply vendor fixes or mitigations, and preserve logs for review.

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