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Description

A security flaw has been discovered in Totolink A3600R 5.9c.4959. This issue affects the function setAppEasyWizardConfig in the library /lib/cste_modules/app.so. Performing a manipulation of the argument apcliSsid results in buffer overflow. It is possible to initiate the attack remotely. The exploit has been released to the public and may be used for attacks.

PUBLISHED Reserved 2026-01-30 | Published 2026-01-30 | Updated 2026-02-23 | Assigner VulDB




HIGH: 8.7CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P
HIGH: 8.8CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:X/RC:R
HIGH: 8.8CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:X/RC:R
9.0AV:N/AC:L/Au:S/C:C/I:C/A:C/E:POC/RL:ND/RC:UR

Problem types

Buffer Overflow

Memory Corruption

Product status

5.9c.4959
affected

Timeline

2026-01-30:Advisory disclosed
2026-01-30:VulDB entry created
2026-01-31:VulDB entry last update

Credits

Abcd1234 (VulDB User) reporter

References

vuldb.com/?id.343480 (VDB-343480 | Totolink A3600R app.so setAppEasyWizardConfig buffer overflow) vdb-entry technical-description

vuldb.com/?ctiid.343480 (VDB-343480 | CTI Indicators (IOB, IOC, IOA)) signature permissions-required

vuldb.com/?submit.740888 (Submit #740888 | TOTOLINK A3600R V5.9c.4959 Buffer Overflow) third-party-advisory

github.com/...3600R/4959-apcliSsid-setAppEasyWizardConfig.md related

github.com/...3600R/4959-apcliSsid-setAppEasyWizardConfig.md exploit

www.totolink.net/ product

cve.org (CVE-2026-1686)

nvd.nist.gov (CVE-2026-1686)

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