CVE-2017-7935
CVE-2017-7935 is a high-severity vulnerability in Phoenix Contact Gmbh Mguard Firmware with a CVSS 3.x base score of 7.5. 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-400.
Key facts
- Severity: High (CVSS 3.x base score 7.5)
- CVSS v2: 7.8
- EPSS exploit prediction: 1% (64th percentile)
- Actively exploited: Not listed in CISA KEV
- Weakness: CWE-400
- Affected product: Phoenix Contact Gmbh Mguard Firmware
- Published:
- Last modified:
Description
A Resource Exhaustion issue was discovered in Phoenix Contact GmbH mGuard firmware versions 8.3.0 to 8.4.2. An attacker may compromise the device's availability by performing multiple initial VPN requests.
Frequently asked questions
- What is CVE-2017-7935?
- A Resource Exhaustion issue was discovered in Phoenix Contact GmbH mGuard firmware versions 8.3.0 to 8.4.2. An attacker may compromise the device's availability by performing multiple initial VPN requests.
- How severe is CVE-2017-7935?
- CVE-2017-7935 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
- Is CVE-2017-7935 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (64th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2017-7935?
- CVE-2017-7935 primarily affects Phoenix Contact Gmbh Mguard Firmware. In total, 6 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
- How do I fix CVE-2017-7935?
- 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-2017-7935 published?
- CVE-2017-7935 was published on 2017-05-19 and last updated on 2026-06-17.
References
Affected products (6)
- cpe:2.3:o:phoenix_contact_gmbh:mguard_firmware:8.3.0:*:*:*:*:*:*:*
- cpe:2.3:o:phoenix_contact_gmbh:mguard_firmware:8.3.1:*:*:*:*:*:*:*
- cpe:2.3:o:phoenix_contact_gmbh:mguard_firmware:8.3.2:*:*:*:*:*:*:*
- cpe:2.3:o:phoenix_contact_gmbh:mguard_firmware:8.4.0:*:*:*:*:*:*:*
- cpe:2.3:o:phoenix_contact_gmbh:mguard_firmware:8.4.1:*:*:*:*:*:*:*
- cpe:2.3:o:phoenix_contact_gmbh:mguard_firmware:8.4.2:*:*:*:*:*:*:*
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- CVE-2017-7937 — Medium (CVSS 4.0): An Improper Authentication issue was discovered in Phoenix Contact GmbH mGuard firmware versions 8.3.0 to 8.4.2. An…
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