CVE-2021-39149
No known exploitation. EPSS puts it in the 92nd percentile. A vendor fix is available.
What to do
The vendor has published a fix. Version details are below where the sources state them.
What it is
From the CVE record
XStream is vulnerable to an Arbitrary Code Execution attack
In plain language
No plain-language summary for this CVE yet.
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
4.7% chance of exploitation activity in the next 30 days, which ranks it in the 92nd percentile of scored CVEs.
Exploit Prediction Scoring System, FIRST.org. A probability, not a confirmation.
Lifecycle
6 events over 1767 days, from the signal feeds we watch.
- OpenVAS check added
- Patch availablerecord updated
- Publishedweakness classified, att&ck mapped
Affected products
- business activity monitoringEnterprise Software / itsm-monitoring
- commerce guided searchDatabases / data-warehouse-analytics
- communications billing and revenue management elastic charging engineEnterprise Software / itsm-monitoring
- communications cloud native core automated test suiteDatabases / data-warehouse-analytics
- communications cloud native core binding support functionCommunications
- communications cloud native core policyDatabases / cache-message-queue
- communications unified inventory managementEnterprise Software / itsm-monitoring
- retail xstore point of serviceDatabases / cache-message-queue
And 4 more affected products. See all after sign-in
Technical detail
CVSS 3.1 vector
Open in the CVSS calculatorCVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H
Scored 8.5 by NVD.
How it is reached
- Attack Vector NetworkExploitable remotely over the network without any special conditions
- Attack Complexity HighRequires specific conditions like a race condition or non-default configuration
- Privileges Required LowRequires basic user-level privileges
- User Interaction NoneNo user interaction needed — fully automated exploitation
Scope
- Scope ChangedThe exploit can affect other components (e.g. sandbox escape, host compromise from VM)
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
References in the record
- github.com/x-stream/xstream/security/advisories/GHSA-3ccq-5vw3-2p6x
- nvd.nist.gov/vuln/detail/CVE-2021-39149
- github.com/x-stream/xstream
And 14 more references. See all after sign-in
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