CVE-2017-10856: SEIL/X 4.60 to 5.72, SEIL/B1 4.60 to 5.72, SEIL/x86 3.20 to 5.72, SEIL/BPV4 5.00 to 5.72 allows remote attacke
37
Routine
LOW 3.7REMOTEMITIGATEMITIGATEMITIGATE
CVE-2017-10856 is a low-severity flaw (CVSS 3.7) affecting b1 firmware, bpv 4 firmware, x1 firmware. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.
SEIL/X 4.60 to 5.72, SEIL/B1 4.60 to 5.72, SEIL/x86 3.20 to 5.72, SEIL/BPV4 5.00 to 5.72 allows remote attackers to cause a temporary failure of the device's encrypted communications via a specially crafted packet.
Why this priority
Remotely exploitable, no login, no user action
No fix is published yet: follow the downgrade or mitigation steps.
Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score
Am I affected?
Timeline
Published CVE record published
Updated Record last modified
seil b1 firmware MITIGATE
Affected: 4.60 · 5.72
Fixed in: no fixed release known
Safe to downgrade to: a release before 4.60
Check your OS release
cat /etc/os-release; uname -r
Debian / Ubuntu
sudo apt update && sudo apt full-upgrade
RHEL / Amazon Linux / Fedora
sudo dnf upgrade --refresh
Windows
Install the latest cumulative update from Windows Update
If no patch exists yet
OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.
seil bpv 4 firmware MITIGATE
Affected: 5.00 · 5.72
Fixed in: no fixed release known
Safe to downgrade to: a release before 5.00
Check your OS release
cat /etc/os-release; uname -r
Debian / Ubuntu
sudo apt update && sudo apt full-upgrade
RHEL / Amazon Linux / Fedora
sudo dnf upgrade --refresh
Windows
Install the latest cumulative update from Windows Update
If no patch exists yet
OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.
seil x1 firmware MITIGATE
Affected: 4.60 · 5.72
Fixed in: no fixed release known
Safe to downgrade to: a release before 4.60
Check your OS release
cat /etc/os-release; uname -r
Debian / Ubuntu
sudo apt update && sudo apt full-upgrade
RHEL / Amazon Linux / Fedora
sudo dnf upgrade --refresh
Windows
Install the latest cumulative update from Windows Update
If no patch exists yet
OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.
seil x2 firmware MITIGATE
Affected: 4.60 · 5.72
Fixed in: no fixed release known
Safe to downgrade to: a release before 4.60
Check your OS release
cat /etc/os-release; uname -r
Debian / Ubuntu
sudo apt update && sudo apt full-upgrade
RHEL / Amazon Linux / Fedora
sudo dnf upgrade --refresh
Windows
Install the latest cumulative update from Windows Update
If no patch exists yet
OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.
seil x86 fuji firmware MITIGATE
Affected: 3.20 · 5.72
Fixed in: no fixed release known
Safe to downgrade to: a release before 3.20
Check your OS release
cat /etc/os-release; uname -r
Debian / Ubuntu
sudo apt update && sudo apt full-upgrade
RHEL / Amazon Linux / Fedora
sudo dnf upgrade --refresh
Windows
Install the latest cumulative update from Windows Update
If no patch exists yet
OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.
Verify at the official sourceNVD · CVE Program · Report a problem with this page Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.
Quick answers
How do I fix CVE-2017-10856?
b1 firmware: mitigate or apply the listed mitigation; bpv 4 firmware: mitigate or apply the listed mitigation; x1 firmware: mitigate or apply the listed mitigation. Exact commands for each OS are on this page.
Is CVE-2017-10856 being exploited?
CVE-2017-10856 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.
What does CVE-2017-10856 affect?
CVE-2017-10856 affects b1 firmware, bpv 4 firmware, x1 firmware. Severity is low (CVSS 3.7). SEIL/X 4.60 to 5.72, SEIL/B1 4.60 to 5.72, SEIL/x86 3.20 to 5.72, SEIL/BPV4 5.00 to 5.72 allows remote attackers to cause a temporary failure of the device's encrypted communications via a specially crafted packet.
How urgent is CVE-2017-10856?
Priority 37/100. Remotely exploitable, no login, no user action
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