How severe is CVE-2017-9956?

CVE-2017-9956 has a CVSS 3.x base score of 7.3, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability low.

Is CVE-2017-9956 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (61st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2017-9956?

CVE-2017-9956 affects Schneider-electric U.motion Builder. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2017-9956?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2017-9956 published?

CVE-2017-9956 was published on 2017-09-26 and last updated on 2026-06-17.

CVE-2017-9956

CVE-2017-9956 is a high-severity vulnerability in Schneider-electric U.motion Builder with a CVSS 3.x base score of 7.3. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-798.

Key facts

Severity: High (CVSS 3.x base score 7.3)
CVSS v2: 7.5
EPSS exploit prediction: 1% (61st percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-798
Affected product: Schneider-electric U.motion Builder
Published: 2017-09-26
Last modified: 2026-06-17

Description

An authentication bypass vulnerability exists in Schneider Electric's U.motion Builder software versions 1.2.1 and prior in which the system contains a hard-coded valid session. An attacker can use that session ID as part of the HTTP cookie of a web request, resulting in authentication bypass

Frequently asked questions

What is CVE-2017-9956?: An authentication bypass vulnerability exists in Schneider Electric's U.motion Builder software versions 1.2.1 and prior in which the system contains a hard-coded valid session. An attacker can use that session ID as part of the HTTP cookie of a web request, resulting in authentication bypass
How severe is CVE-2017-9956?: CVE-2017-9956 has a CVSS 3.x base score of 7.3, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability low.
Is CVE-2017-9956 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (61st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2017-9956?: CVE-2017-9956 affects Schneider-electric U.motion Builder. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2017-9956?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2017-9956 published?: CVE-2017-9956 was published on 2017-09-26 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:schneider-electric:u.motion_builder:*:*:*:*:*:*:*:*

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