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Description

A vulnerability was detected in Totolink A800R 4.1.2cu.5137_B20200730. This impacts the function setAppEasyWizardConfig in the library /lib/cste_modules/app.so. The manipulation of the argument apcliSsid results in buffer overflow. The attack can be executed remotely. The exploit is now public and may be used.

PUBLISHED Reserved 2026-04-12 | Published 2026-04-13 | Updated 2026-04-13 | 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

4.1.2cu.5137_B20200730
affected

Timeline

2026-04-12:Advisory disclosed
2026-04-12:VulDB entry created
2026-04-12:VulDB entry last update

Credits

xuanyu (VulDB User) reporter

References

vuldb.com/vuln/357037 (VDB-357037 | Totolink A800R app.so setAppEasyWizardConfig buffer overflow) vdb-entry technical-description

vuldb.com/vuln/357037/cti (VDB-357037 | CTI Indicators (IOB, IOC, IOA)) signature permissions-required

vuldb.com/submit/793114 (Submit #793114 | TOTOLINK A800R V4.1.2cu.5137_B20200730 Buffer Overflow) third-party-advisory

github.com/...R/01_Buffer_Overflow_setAppEasyWizardConfig.md exploit

www.totolink.net/ product

cve.org (CVE-2026-6157)

nvd.nist.gov (CVE-2026-6157)

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