CVE-2017-8840

Exp

Debug information disclosure 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. A direct request to cgi-bin/HASync/hasync.cgi?debug=1 shows Master LAN Address, Serial Number, HA Group ID, Virtual IP, and Submitted syncid.

Published: 2017-06-05 Last update: 2026-05-13 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2017-8840 is rated High Exploit Risk (66.5/100): CVSS Medium severity, with medium exploitation likelihood (EPSS 3.84%). 1 public exploit reference(s) are indexed (Exploit-DB). Public exploits are available—assess exposure, apply mitigations, and prioritize patching.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Public exploit references (Exploit-DB) for CVE-2017-8840

EDB-ID Source Kind Published Link
42130 exploit_db edb 2017-06-06 Exploit-DB ↗

Exploit prediction scoring system (EPSS) score for CVE-2017-8840

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2025-11-21 4.21% 3.84% -0.37%
2 2025-11-18 3.84% 4.21% +0.37%
3 2025-03-30 — 3.84% —

Full EPSS history (9 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2017-8840

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
5.3 3.0 MEDIUM
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:L)
Some sensitive info could get out, but not a total data dump.
Integrity (I:N)
Data isn’t meaningfully altered or forged.
Availability (A:N)
Service keeps running; no real outage angle.
 3.9 1.4 [email protected]
5.0 2.0 MEDIUM
AV:N/AC:L/Au:N/C:P/I:N/A:N Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:L)
Exploitation conditions are straightforward and predictable.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:P)
Partial confidentiality impact.
Integrity impact (I:N)
No integrity impact.
Availability impact (A:N)
No availability impact.
 10.0 2.9 [email protected]

Weakness enumeration for CVE-2017-8840

Affected software / configurations for CVE-2017-8840

Vendor Product Version Raw CPE
peplink b305hw2_firmware 7.0.1 cpe:2.3:o:peplink:b305hw2_firmware:7.0.1:*:*:*:*:*:*:*
peplink 380hw6_firmware 7.0.1 cpe:2.3:o:peplink:380hw6_firmware:7.0.1:*:*:*:*:*:*:*
peplink 580hw2_firmware 7.0.1 cpe:2.3:o:peplink:580hw2_firmware:7.0.1:*:*:*:*:*:*:*
peplink 710hw3_firmware 7.0.1 cpe:2.3:o:peplink:710hw3_firmware:7.0.1:*:*:*:*:*:*:*
peplink 1350hw2_firmware 7.0.1 cpe:2.3:o:peplink:1350hw2_firmware:7.0.1:*:*:*:*:*:*:*
peplink 2500_firmware 7.0.1 cpe:2.3:o:peplink:2500_firmware:7.0.1:*:*:*:*:*:*:*

References for CVE-2017-8840

cvelogic Threat Intelligence