How severe is CVE-2017-8837?

CVE-2017-8837 has a CVSS 3.x base score of 9.8, 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 high.

Is CVE-2017-8837 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 5% (91st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2017-8837?

CVE-2017-8837 primarily affects Peplink B305hw2 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-2017-8837?

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-2017-8837 published?

CVE-2017-8837 was published on 2017-06-05 and last updated on 2026-06-17.

CVE-2017-8837

CVE-2017-8837 is a critical-severity vulnerability in Peplink B305hw2 Firmware with a CVSS 3.x base score of 9.8. 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-522.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
CVSS v2: 5.0
EPSS exploit prediction: 5% (91st percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-522
Affected product: Peplink B305hw2 Firmware
Published: 2017-06-05
Last modified: 2026-06-17

Description

Cleartext password storage exists on Peplink Balance 305, 380, 580, 710, 1350, and 2500 devices with firmware before fw-b305hw2_380hw6_580hw2_710hw3_1350hw2_2500-7.0.1-build2093. The files in question are /etc/waipass and /etc/roapass. In case one of these devices is compromised, the attacker can gain access to passwords and abuse them to compromise further systems.

Frequently asked questions

What is CVE-2017-8837?: Cleartext password storage exists on Peplink Balance 305, 380, 580, 710, 1350, and 2500 devices with firmware before fw-b305hw2_380hw6_580hw2_710hw3_1350hw2_2500-7.0.1-build2093. The files in question are /etc/waipass and /etc/roapass. In case one of these devices is compromised, the attacker can gain access to passwords and abuse them to compromise further systems.
How severe is CVE-2017-8837?: CVE-2017-8837 has a CVSS 3.x base score of 9.8, 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 high.
Is CVE-2017-8837 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 5% (91st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2017-8837?: CVE-2017-8837 primarily affects Peplink B305hw2 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-2017-8837?: 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-2017-8837 published?: CVE-2017-8837 was published on 2017-06-05 and last updated on 2026-06-17.

References

Affected products (6)

cpe:2.3:o:peplink:b305hw2_firmware:7.0.1:*:*:*:*:*:*:*
cpe:2.3:o:peplink:380hw6_firmware:7.0.1:*:*:*:*:*:*:*
cpe:2.3:o:peplink:580hw2_firmware:7.0.1:*:*:*:*:*:*:*
cpe:2.3:o:peplink:710hw3_firmware:7.0.1:*:*:*:*:*:*:*
cpe:2.3:o:peplink:1350hw2_firmware:7.0.1:*:*:*:*:*:*:*
cpe:2.3:o:peplink:2500_firmware:7.0.1:*:*:*:*:*:*:*

More vulnerabilities in Peplink B305hw2 Firmware

CVE-2017-8835 — Critical (CVSS 9.8): SQL injection exists on Peplink Balance 305, 380, 580, 710, 1350, and 2500 devices with firmware before…
CVE-2017-8836 — High (CVSS 8.8): CSRF exists on Peplink Balance 305, 380, 580, 710, 1350, and 2500 devices with firmware before…
CVE-2017-8841 — High (CVSS 8.1): Arbitrary file deletion exists on Peplink Balance 305, 380, 580, 710, 1350, and 2500 devices with firmware before…
CVE-2017-8839 — Medium (CVSS 6.1): XSS via orig_url exists on Peplink Balance 305, 380, 580, 710, 1350, and 2500 devices with firmware before…
CVE-2017-8838 — Medium (CVSS 6.1): XSS via syncid exists on Peplink Balance 305, 380, 580, 710, 1350, and 2500 devices with firmware before…
CVE-2017-8840 — Medium (CVSS 5.3): Debug information disclosure exists on Peplink Balance 305, 380, 580, 710, 1350, and 2500 devices with firmware before…

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