How severe is CVE-2019-6522?

CVE-2019-6522 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 none, and availability high.

Is CVE-2019-6522 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (83rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2019-6522?

CVE-2019-6522 primarily affects Moxa Iks-g6824a Firmware. In total, 4 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2019-6522?

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-2019-6522 published?

CVE-2019-6522 was published on 2019-03-05 and last updated on 2026-06-17.

CVE-2019-6522

CVE-2019-6522 is a critical-severity vulnerability in Moxa Iks-g6824a Firmware 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-125.

Key facts

Severity: Critical (CVSS 3.x base score 9.1)
CVSS v2: 8.5
EPSS exploit prediction: 3% (83rd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-125
Affected product: Moxa Iks-g6824a Firmware
Published: 2019-03-05
Last modified: 2026-06-17

Description

Moxa IKS and EDS fails to properly check array bounds which may allow an attacker to read device memory on arbitrary addresses, and may allow an attacker to retrieve sensitive data or cause device reboot.

Frequently asked questions

What is CVE-2019-6522?: Moxa IKS and EDS fails to properly check array bounds which may allow an attacker to read device memory on arbitrary addresses, and may allow an attacker to retrieve sensitive data or cause device reboot.
How severe is CVE-2019-6522?: CVE-2019-6522 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 none, and availability high.
Is CVE-2019-6522 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (83rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2019-6522?: CVE-2019-6522 primarily affects Moxa Iks-g6824a Firmware. In total, 4 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2019-6522?: 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-2019-6522 published?: CVE-2019-6522 was published on 2019-03-05 and last updated on 2026-06-17.

References

Affected products (4)

cpe:2.3:o:moxa:iks-g6824a_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:moxa:eds-405a_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:moxa:eds-408a_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:moxa:eds-510a_firmware:*:*:*:*:*:*:*:*

More vulnerabilities in Moxa Iks-g6824a Firmware

CVE-2019-6526 — Critical (CVSS 9.8): Moxa IKS-G6824A series Versions 4.5 and prior, EDS-405A series Version 3.8 and prior, EDS-408A series Version 3.8 and…
CVE-2019-6563 — Critical (CVSS 9.8): Moxa IKS and EDS generate a predictable cookie calculated with an MD5 hash, allowing an attacker to capture the…
CVE-2019-6557 — Critical (CVSS 9.8): Several buffer overflow vulnerabilities have been identified in Moxa IKS and EDS, which may allow remote code execution.
CVE-2019-6524 — Critical (CVSS 9.8): Moxa IKS and EDS do not implement sufficient measures to prevent multiple failed authentication attempts, which may…
CVE-2019-6561 — High (CVSS 8.8): Cross-site request forgery has been identified in Moxa IKS and EDS, which may allow for the execution of unauthorized…
CVE-2019-6520 — High (CVSS 7.5): Moxa IKS and EDS does not properly check authority on server side, which results in a read-only user being able to…

All CVEs affecting Moxa Iks-g6824a Firmware →

Other CWE-125 (Out-of-bounds Read) vulnerabilities

CVE-2026-24826 — Critical (CVSS 10.0): Out-of-bounds Write, Divide By Zero, NULL Pointer Dereference, Use of Uninitialized Resource, Out-of-bounds Read,…
CVE-2024-22004 — Critical (CVSS 10.0): Due to length check, an attacker with privilege access on a Linux Nonsecure operating system can trigger a…
CVE-2021-41556 — Critical (CVSS 10.0): sqclass.cpp in Squirrel through 2.2.5 and 3.x through 3.1 allows an out-of-bounds read (in the core interpreter) that…
CVE-2021-21777 — Critical (CVSS 10.0): An information disclosure vulnerability exists in the Ethernet/IP UDP handler functionality of EIP Stack Group OpENer…
CVE-2017-14451 — Critical (CVSS 10.0): An exploitable out-of-bounds read vulnerability exists in libevm (Ethereum Virtual Machine) of CPP-Ethereum. A…
CVE-2013-0767 — Critical (CVSS 10.0): The nsSVGPathElement::GetPathLengthScale function in Mozilla Firefox before 18.0, Firefox ESR 10.x before 10.0.12 and…

Browse all CWE-125 (Out-of-bounds Read) vulnerabilities →