How severe is CVE-2022-4608?

CVE-2022-4608 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-2022-4608 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (44th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2022-4608?

CVE-2022-4608 primarily affects Hitachienergy Rtu500 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-2022-4608?

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-2022-4608 published?

CVE-2022-4608 was published on 2023-07-26 and last updated on 2026-06-17.

CVE-2022-4608

CVE-2022-4608 is a high-severity vulnerability in Hitachienergy Rtu500 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-787.

Key facts

Severity: High (CVSS 3.x base score 7.5)
EPSS exploit prediction: 1% (44th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-787
Affected product: Hitachienergy Rtu500 Firmware
Published: 2023-07-26
Last modified: 2026-06-17

Description

A vulnerability exists in HCI IEC 60870-5-104 function included in certain versions of the RTU500 series product. The vulnerability can only be exploited, if the HCI 60870-5-104 is configured with support for IEC 62351-3. After session resumption interval is expired an RTU500 initiated update of session parameters causes an unexpected restart due to a stack overflow.

Frequently asked questions

What is CVE-2022-4608?: A vulnerability exists in HCI IEC 60870-5-104 function included in certain versions of the RTU500 series product. The vulnerability can only be exploited, if the HCI 60870-5-104 is configured with support for IEC 62351-3. After session resumption interval is expired an RTU500 initiated update of session parameters causes an unexpected restart due to a stack overflow.
How severe is CVE-2022-4608?: CVE-2022-4608 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-2022-4608 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (44th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2022-4608?: CVE-2022-4608 primarily affects Hitachienergy Rtu500 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-2022-4608?: 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-2022-4608 published?: CVE-2022-4608 was published on 2023-07-26 and last updated on 2026-06-17.

References

Affected products (4)

cpe:2.3:o:hitachienergy:rtu500_firmware:13.3.1:*:*:*:*:*:*:*
cpe:2.3:o:hitachienergy:rtu500_firmware:13.3.2:*:*:*:*:*:*:*
cpe:2.3:o:hitachienergy:rtu500_firmware:13.3.3:*:*:*:*:*:*:*
cpe:2.3:o:hitachienergy:rtu500_firmware:13.4.1:*:*:*:*:*:*:*

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