CVE-2026-90999
Sentry Seer vulnerability allows attacker-controlled input to be executed in a privileged environment
No known exploitation. EPSS puts it in the 50th percentile. No fix published yet.
What to do
No fixed build or workaround is published yet. Limit exposure and watch for a patch.
Steps
Written by AI from the record- Check whether your organization uses Sentry Seer for automated agent operations with high system permissions.
- Temporarily stop or isolate any Sentry Seer agents that accept data from the internet and can run privileged commands.
- No fixed version has been published; ask the vendor for a security update and deploy it as soon as one is available.
What it is
From the CVE record
Sentry Seer is vulnerable to a multi-stage trust-boundary violation that allows unauthenticated attacker-controlled telemetry to become code that is executed by an agent in a privileged automation environment. An external attacker can submit fabricated Sentry events without having access to the victim’s Sentry account, source repository, or infrastructure.
In plain language
Written by AI from the recordSentry Seer can let an outsider send fake data that runs harmful commands in a high-permission automation system, so businesses using it for privileged automated operations should act now.
Unauthenticated network-based arbitrary code execution arises when attacker-controlled Sentry telemetry is interpreted as instructions by Sentry Seer agents operating in a privileged environment.
If you're affected
- Full automation-system takeover
- Sensitive data exposure
- Unauthorized system changes
- Service disruption
- Ransomware risk
Exploitation
Where each signal puts this CVE on the scale from published to confirmed exploited.
- CISA KEV
Not in the catalog. CISA has not confirmed exploitation.
- Public exploits
No public exploit or proof of concept found in the sources we track.
- EPSS
0.7% chance of exploitation activity in the next 30 days, which ranks it in the 50th percentile of scored CVEs.
Exploit Prediction Scoring System, FIRST.org. A probability, not a confirmation.
- Attention now
Rising, driven by in-the-wild reports.
Lifecycle
6 events over 2 days, from the signal feeds we watch.
- Record updatedrecord updated
- Publishedweakness classified, att&ck mapped, record updated
Affected products
Technical detail
CVSS 3.1 vector
Open in the CVSS calculatorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Scored 9.8 by NVD.
How it is reached
- Attack Vector NetworkExploitable remotely over the network without any special conditions
- Attack Complexity LowNo special conditions — the attack can be reliably reproduced
- Privileges Required NoneNo authentication required — anyone can exploit this
- User Interaction NoneNo user interaction needed — fully automated exploitation
Scope
- Scope UnchangedImpact is limited to the vulnerable component itself
Impact if exploited
- Confidentiality HighTotal information disclosure — all data in the component is compromised
- Integrity HighTotal loss of integrity — attacker can modify any data in the component
- Availability HighTotal denial of service — the component is completely unavailable
Weaknesses
ATT&CK techniques
Mapped from the weaknesses above (CWE to ATT&CK), not observed in attacks.
Sources
Watch the software you run.
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We'll flag the next CVE, public exploit or patch for Sentry Seer, not every advisory.
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