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CVE-2020-25218

Grandstream GRP261x VoIP phone running firmware version 1.0.3.6 (Base) allow Authentication Bypass in its administrative web interface.
9.8
CVSS
8.2
ShadowTrackr
NO
CISA KEV
-
NCSC.nl
CVSS v4.0 Metrics
Exploitability
Attack VectorNetwork
ComplexityLow
RequirementsPresent
PrivilegesNone
User InteractionNone
Threat
Exploit MaturityPoC
Vulnerable System
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh
Subsequent System
ConfidentialityNone
IntegrityNone
AvailabilityNone
Supplemental
SafetyNegligible
AutomatableYes
RecoveryAutomatic
Value DensityConcentrated
UrgencyMedium
Patch StatusUnavailable

Change Log
DateSourceChangesScore
2026-07-21PoCE: U→P7.2 → 8.2
2026-07-21nvdAV: P→N, AC: H→L, PR: H→N, UI: A→N, VC: N→H, VI: N→H, VA: N→H0.0 → 7.2
2026-07-21cve.orginitial, patch: Unavailable0.0
References: CVE.org · NVD · PoC

Affected Software
VendorProductVersion
grandstreamgrp2612_firmware1.0.3.6
grandstreamgrp2612p_firmware1.0.3.6
grandstreamgrp2612w_firmware1.0.3.6
grandstreamgrp2613_firmware1.0.3.6
grandstreamgrp2614_firmware1.0.3.6
grandstreamgrp2615_firmware1.0.3.6
grandstreamgrp2616_firmware1.0.3.6
Published: 2021-03-29