How severe is CVE-2015-7921?

CVE-2015-7921 has a CVSS 3.x base score of 9.1, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability none.

Is CVE-2015-7921 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (78th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2015-7921?

CVE-2015-7921 primarily affects Schneider-electric Proface Gp-pro Ex Ex-ed. In total, 4 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2015-7921?

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

When was CVE-2015-7921 published?

CVE-2015-7921 was published on 2016-04-06 and last updated on 2026-06-17.

CVE-2015-7921

CVE-2015-7921 is a critical-severity vulnerability in Schneider-electric Proface Gp-pro Ex Ex-ed with a CVSS 3.x base score of 9.1. 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-255.

Key facts

Severity: Critical (CVSS 3.x base score 9.1)
CVSS v2: 6.4
EPSS exploit prediction: 2% (78th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-255
Affected product: Schneider-electric Proface Gp-pro Ex Ex-ed
Published: 2016-04-06
Last modified: 2026-06-17

Description

The FTP server in Pro-face GP-Pro EX EX-ED before 4.05.000, PFXEXEDV before 4.05.000, PFXEXEDLS before 4.05.000, and PFXEXGRPLS before 4.05.000 has hardcoded credentials, which makes it easier for remote attackers to bypass authentication by leveraging knowledge of these credentials.

Frequently asked questions

What is CVE-2015-7921?: The FTP server in Pro-face GP-Pro EX EX-ED before 4.05.000, PFXEXEDV before 4.05.000, PFXEXEDLS before 4.05.000, and PFXEXGRPLS before 4.05.000 has hardcoded credentials, which makes it easier for remote attackers to bypass authentication by leveraging knowledge of these credentials.
How severe is CVE-2015-7921?: CVE-2015-7921 has a CVSS 3.x base score of 9.1, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability none.
Is CVE-2015-7921 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (78th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2015-7921?: CVE-2015-7921 primarily affects Schneider-electric Proface Gp-pro Ex Ex-ed. In total, 4 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2015-7921?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2015-7921 published?: CVE-2015-7921 was published on 2016-04-06 and last updated on 2026-06-17.

References

https://ics-cert.us-cert.gov/advisories/ICSA-16-096-01

Affected products (4)

cpe:2.3:a:schneider-electric:proface_gp-pro_ex_ex-ed:*:*:*:*:*:*:*:*
cpe:2.3:a:schneider-electric:proface_gp-pro_ex_pfxexedls:*:*:*:*:*:*:*:*
cpe:2.3:a:schneider-electric:proface_gp-pro_ex_pfxexedv:*:*:*:*:*:*:*:*
cpe:2.3:a:schneider-electric:proface_gp-pro_ex_pfxexgrpls:*:*:*:*:*:*:*:*

More vulnerabilities in Schneider-electric Proface Gp-pro Ex Ex-ed

CVE-2016-2290 — High (CVSS 8.8): Heap-based buffer overflow in Pro-face GP-Pro EX EX-ED before 4.05.000, PFXEXEDV before 4.05.000, PFXEXEDLS before…
CVE-2016-2292 — Medium (CVSS 6.5): Stack-based buffer overflow in Pro-face GP-Pro EX EX-ED before 4.05.000, PFXEXEDV before 4.05.000, PFXEXEDLS before…
CVE-2016-2291 — Medium (CVSS 6.5): Pro-face GP-Pro EX EX-ED before 4.05.000, PFXEXEDV before 4.05.000, PFXEXEDLS before 4.05.000, and PFXEXGRPLS before…

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