How severe is CVE-2023-42771?

CVE-2023-42771 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over an adjacent network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2023-42771 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (25th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-42771?

CVE-2023-42771 primarily affects Furunosystems Acera 1310 Firmware. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2023-42771?

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-2023-42771 published?

CVE-2023-42771 was published on 2023-10-03 and last updated on 2026-06-17.

CVE-2023-42771

CVE-2023-42771 is a high-severity vulnerability in Furunosystems Acera 1310 Firmware with a CVSS 3.x base score of 8.8. 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-287.

Key facts

Severity: High (CVSS 3.x base score 8.8)
EPSS exploit prediction: 0% (25th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-287
Affected product: Furunosystems Acera 1310 Firmware
Published: 2023-10-03
Last modified: 2026-06-17

Description

Authentication bypass vulnerability in ACERA 1320 firmware ver.01.26 and earlier, and ACERA 1310 firmware ver.01.26 and earlier allows a network-adjacent unauthenticated attacker who can access the affected product to download configuration files and/or log files, and upload configuration files and/or firmware. They are affected when running in ST(Standalone) mode.

Frequently asked questions

What is CVE-2023-42771?: Authentication bypass vulnerability in ACERA 1320 firmware ver.01.26 and earlier, and ACERA 1310 firmware ver.01.26 and earlier allows a network-adjacent unauthenticated attacker who can access the affected product to download configuration files and/or log files, and upload configuration files and/or firmware. They are affected when running in ST(Standalone) mode.
How severe is CVE-2023-42771?: CVE-2023-42771 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over an adjacent network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2023-42771 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (25th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-42771?: CVE-2023-42771 primarily affects Furunosystems Acera 1310 Firmware. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2023-42771?: 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-2023-42771 published?: CVE-2023-42771 was published on 2023-10-03 and last updated on 2026-06-17.

References

Affected products (2)

cpe:2.3:o:furunosystems:acera_1310_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:furunosystems:acera_1320_firmware:*:*:*:*:*:*:*:*

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