How severe is CVE-2026-2329?

CVE-2026-2329 has a CVSS 3.x base score of 9.8, 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 high, and availability high.

Is CVE-2026-2329 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 40% (98th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-2329?

CVE-2026-2329 primarily affects Grandstream Gxp1610 Firmware. In total, 6 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2026-2329?

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.

Does CVE-2026-2329 have an EU (EUVD) identifier?

Yes. CVE-2026-2329 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-8089.

When was CVE-2026-2329 published?

CVE-2026-2329 was published on 2026-02-18 and last updated on 2026-06-17.

CVE-2026-2329

CVE-2026-2329 is a critical-severity vulnerability in Grandstream Gxp1610 Firmware with a CVSS 3.x base score of 9.8. Its EPSS exploit-prediction score of 40% places it in the 98th percentile, indicating an elevated likelihood of exploitation. The underlying weakness is classified as CWE-121.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
CVSS v4: 9.3
EPSS exploit prediction: 40% (98th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-8089
Weakness: CWE-121
Affected product: Grandstream Gxp1610 Firmware
Published: 2026-02-18
Last modified: 2026-06-17

Description

An unauthenticated stack-based buffer overflow vulnerability exists in the HTTP API endpoint /cgi-bin/api.values.get. A remote attacker can leverage this vulnerability to achieve unauthenticated remote code execution (RCE) with root privileges on a target device. The vulnerability affects all six device models in the series: GXP1610, GXP1615, GXP1620, GXP1625, GXP1628, and GXP1630.

Frequently asked questions

What is CVE-2026-2329?: An unauthenticated stack-based buffer overflow vulnerability exists in the HTTP API endpoint /cgi-bin/api.values.get. A remote attacker can leverage this vulnerability to achieve unauthenticated remote code execution (RCE) with root privileges on a target device. The vulnerability affects all six device models in the series: GXP1610, GXP1615, GXP1620, GXP1625, GXP1628, and GXP1630.
How severe is CVE-2026-2329?: CVE-2026-2329 has a CVSS 3.x base score of 9.8, 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 high, and availability high.
Is CVE-2026-2329 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 40% (98th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-2329?: CVE-2026-2329 primarily affects Grandstream Gxp1610 Firmware. In total, 6 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2026-2329?: 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.
Does CVE-2026-2329 have an EU (EUVD) identifier?: Yes. CVE-2026-2329 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-8089.
When was CVE-2026-2329 published?: CVE-2026-2329 was published on 2026-02-18 and last updated on 2026-06-17.

References

Affected products (6)

cpe:2.3:o:grandstream:gxp1610_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:grandstream:gxp1615_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:grandstream:gxp1620_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:grandstream:gxp1625_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:grandstream:gxp1628_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:grandstream:gxp1630_firmware:*:*:*:*:*:*:*:*

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