How severe is CVE-2023-26588?

CVE-2023-26588 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 high, integrity none, and availability none.

Is CVE-2023-26588 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (43rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-26588?

CVE-2023-26588 primarily affects Buffalo Bs-gsl2024 Firmware. In total, 16 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2023-26588?

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-2023-26588 published?

CVE-2023-26588 was published on 2023-04-11 and last updated on 2026-06-17.

CVE-2023-26588

CVE-2023-26588 is a high-severity vulnerability in Buffalo Bs-gsl2024 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-668.

Key facts

Severity: High (CVSS 3.x base score 7.5)
EPSS exploit prediction: 1% (43rd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-668
Affected product: Buffalo Bs-gsl2024 Firmware
Published: 2023-04-11
Last modified: 2026-06-17

Description

Use of hard-coded credentials vulnerability in Buffalo network devices allows an attacker to access the debug function of the product. The affected products and versions are as follows: BS-GSL2024 firmware Ver. 1.10-0.03 and earlier, BS-GSL2016P firmware Ver. 1.10-0.03 and earlier, BS-GSL2016 firmware Ver. 1.10-0.03 and earlier, BS-GS2008 firmware Ver. 1.0.10.01 and earlier, BS-GS2016 firmware Ver. 1.0.10.01 and earlier, BS-GS2024 firmware Ver. 1.0.10.01 and earlier, BS-GS2048 firmware Ver. 1.0.10.01 and earlier, BS-GS2008P firmware Ver. 1.0.10.01 and earlier, BS-GS2016P firmware Ver. 1.0.10.01 and earlier, and BS-GS2024P firmware Ver. 1.0.10.01 and earlier

Frequently asked questions

What is CVE-2023-26588?: Use of hard-coded credentials vulnerability in Buffalo network devices allows an attacker to access the debug function of the product. The affected products and versions are as follows: BS-GSL2024 firmware Ver. 1.10-0.03 and earlier, BS-GSL2016P firmware Ver. 1.10-0.03 and earlier, BS-GSL2016 firmware Ver. 1.10-0.03 and earlier, BS-GS2008 firmware Ver. 1.0.10.01 and earlier, BS-GS2016 firmware Ver. 1.0.10.01 and earlier, BS-GS2024 firmware Ver. 1.0.10.01 and earlier, BS-GS2048 firmware Ver. 1.0.10.01 and earlier, BS-GS2008P firmware Ver. 1.0.10.01 and earlier, BS-GS2016P firmware Ver. 1.0.10.01 and earlier, and BS-GS2024P firmware Ver. 1.0.10.01 and earlier
How severe is CVE-2023-26588?: CVE-2023-26588 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 high, integrity none, and availability none.
Is CVE-2023-26588 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (43rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-26588?: CVE-2023-26588 primarily affects Buffalo Bs-gsl2024 Firmware. In total, 16 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2023-26588?: 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-2023-26588 published?: CVE-2023-26588 was published on 2023-04-11 and last updated on 2026-06-17.

References

Affected products (16)

cpe:2.3:o:buffalo:bs-gsl2024_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:buffalo:bs-gsl2016p_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:buffalo:bs-gsl2016_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:buffalo:bs-gs2008_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:buffalo:bs-gs2016_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:buffalo:bs-gs2024_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:buffalo:bs-gs2048_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:buffalo:bs-gs2008p_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:buffalo:bs-gs2016p_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:buffalo:bs-gs2024p_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:buffalo:bs-gsl2005_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:buffalo:bs-gsl2008_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:buffalo:bs-gsl2005p_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:buffalo:bs-gsl2008p_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:buffalo:bs-gs2016hp_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:buffalo:bs-gs2024hp_firmware:*:*:*:*:*:*:*:*

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