CPEs used by subscribers on the access network receive their individual configuration settings from a central GAPS instance. A CPE identifies itself by the MAC address of its WAN interface and a certain "chk" value (48bit) derived from the MAC. The algorithm used to compute the "chk" was disclosed by reverse engineering the CPE's firmware. As a result, it is possible to forge valid "chk" values for any given MAC address and therefore receive the configuration settings of other subscribers' CPEs. The configuration settings often contain sensitive values, for example credentials (username/password) for VoIP services. This issue affects Genexis B.V. GAPS up to 7.2.
CVE-2017-6094
CRITICALNVD 9.89.8—
EchelonGraph scoreMEDIUM confidence
Score 9.8 from GitHub Security Advisory (severity: CRITICAL) published 2022-05-14. NVD baseline CVSS 9.8; sources differ by 0.0.
Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
9.8
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
- High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 1%CVSS: 9.8Exploit: NoneExposed: 0
No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.
- CVSS v3
- 9.8
- EG Score
- 9.8(medium)
- EPSS
- 64.1%
- KEV
- Not listed
Published
December 20, 2017
Last Modified
May 13, 2026
Advisory Details (1)
Auto-updated May 15, 2026No patch confirmed yet.
generic
Full Disclosure: CVE-2017-6094 - Genexis GAPS Access Control Vulnerability
http://seclists.org/fulldisclosure/2017/Dec/62Data Freshness Timeline
(refreshed 11× in last 7d / 41× in last 30d)
Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.
- 2026-07-07 13:42 UTCEPSS rescore
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- 2026-05-20 09:08 UTCEG score recompute
- 2026-05-20 09:08 UTCGHSA enrichment
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- 2026-05-20 05:02 UTCGHSA enrichment
- 2026-05-20 00:56 UTCEG score recompute
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- 2026-05-19 20:50 UTCEG score recompute
- 2026-05-19 20:50 UTCGHSA enrichment
- 2026-05-19 16:44 UTCEG score recompute
- 2026-05-19 16:44 UTCGHSA enrichment
- 2026-05-19 12:38 UTCEG score recompute
- 2026-05-19 12:38 UTCGHSA enrichment
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- 2026-05-19 08:32 UTCGHSA enrichment
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- 2026-05-19 00:21 UTCGHSA enrichment
- 2026-05-18 21:30 UTCEPSS rescore
Frequently asked(5)
What is CVE-2017-6094?
CVE-2017-6094 is a critical vulnerability published on December 20, 2017. CPEs used by subscribers on the access network receive their individual configuration settings from a central GAPS instance. A CPE identifies itself by the MAC address of its WAN interface and a certain "chk" value (48bit) derived from the MAC. The algorithm used to compute the "chk" was disclosed…
When was CVE-2017-6094 disclosed?
CVE-2017-6094 was first published in the National Vulnerability Database on December 20, 2017, with the most recent update on May 13, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2017-6094 actively exploited?
CVE-2017-6094 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 64.1% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2017-6094?
CVE-2017-6094 has a CVSS v3 base score of 9.8 (NVD).
How do I remediate CVE-2017-6094?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2017-6094, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.
Dependency Blast Radius
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