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CVE-2024-8577· NVD / CVE Program· CNA VulDB

TOTOLINK AC1200 T8/AC1200 T10 cstecgi.cgi setStaticDhcpRules buffer overflow

A vulnerability was found in TOTOLINK AC1200 T8 and AC1200 T10 4.1.5cu.861_B20230220/4.1.8cu.5207. It has been declared as critical. Affected by this vulnerability is the function setStaticDhcpRules of the file /cgi-bin/cstecgi.cgi. The manipulation of the argument desc leads to buffer overflow. The attack can be launched remotely. The exploit has been disclosed to the public and may be used. The vendor was contacted early about this disclosure but did not respond in any way.

HighCVSS 8.7 · v4.0—No exploit No fix recorded
Published
Sep 8, 2024
Updated
Jun 17, 2026
EPSS
1.1% · 64th percentile
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Action score

34

Monitor

Low priority for now.

CVSS
34 / 40 · 8.7 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 1.1%

CISA SSVC decision

Exploitation
proof of concept
Automatable
no
Technical impact
total

Vulnrichment: CISA's decision-tree inputs.

CNA vs NVD score

NVD
—
CNA · VulDB
8.7
NVD has not scored this yet; the score shown is the CNA’s.

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

The score given by the assigning authority versus NVD’s independent score. A gap means the severity is contested.

Noroxi analysis

No Noroxi analysis for this record yet

We don't hand-write analysis for the hundreds of thousands of vulnerabilities in the database; that wouldn't be honest. For notable, high-impact vulnerabilities our team writes the mechanism, detection and remediation steps.

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Affected systems

VendorProduct
totolinkt8 firmware
totolinkt8
totolinkt10 firmware
totolinkt10

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

  • totolink t10 firmware4.1.8cu.5207
  • totolink t8 firmware4.1.5cu.861_b20230220

Versions reported by the vendor

Affected version ranges reported by the assigning authority (VulDB). Independent of NVD's CPE analysis and usually ahead of it.

  • TOTOLINK AC1200 T10

    • 4.1.5cu.861_B20230220, 4.1.8cu.5207affected

  • TOTOLINK AC1200 T8

    • 4.1.5cu.861_B20230220, 4.1.8cu.5207affected

Same product

totolink: all records

Other highest-scoring records for the same primary product.

  • CVE-2023-24157A command injection vulnerability in the serverIp parameter in the function updateWifiInfo of TOTOLINK T8 V4.1.5cu allows attackers to execu
    40Plan
  • CVE-2023-24156A command injection vulnerability in the ip parameter in the function recvSlaveUpgstatus of TOTOLINK T8 V4.1.5cu allows attackers to execute
    40Plan
  • CVE-2023-24154TOTOLINK T8 V4.1.5cu was discovered to contain a command injection vulnerability via the slaveIpList parameter in the function setUpgradeFW.
    40Plan
  • CVE-2023-24153A command injection vulnerability in the version parameter in the function recvSlaveCloudCheckStatus of TOTOLINK T8 V4.1.5cu allows attacker
    40Plan
  • CVE-2023-24152A command injection vulnerability in the serverIp parameter in the function meshSlaveUpdate of TOTOLINK T8 V4.1.5cu allows attackers to exec
    40Plan
  • CVE-2023-24151A command injection vulnerability in the ip parameter in the function recvSlaveCloudCheckStatus of TOTOLINK T8 V4.1.5cu allows attackers to
    40Plan

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

No fix version is recorded for this entry. Check the references for vendor advisories.

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

EPSS, last 120 days

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

No commit or PR link among the references.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

  • CVE-2024-464198 days apartTOTOLINK AC1200 T8 v4.1.5cu.861_B20230220 has a buffer overflow vulnerability in the setWizardCfg function via the ssid5g parameter.
    39Monitor
  • CVE-2024-464518 days apartTOTOLINK AC1200 T8 v4.1.5cu.861_B20230220 has a buffer overflow vulnerability in the setWiFiAclRules function via the desc parameter.
    39Monitor
  • CVE-2024-85750 days apartTOTOLINK AC1200 T8 cstecgi.cgi setWiFiScheduleCfg buffer overflow
    34Monitor
  • CVE-2024-85760 days apartTOTOLINK AC1200 T8/AC1200 T10 cstecgi.cgi setIpPortFilterRules buffer overflow
    34Monitor
  • CVE-2024-85780 days apartTOTOLINK AC1200 T8 cstecgi.cgi setWiFiMeshName buffer overflow
    34Monitor
  • CVE-2024-85790 days apartTOTOLINK AC1200 T8 cstecgi.cgi setWiFiRepeaterCfg buffer overflow
    34Monitor

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

—

Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

National notice (Türkiye Cybersecurity Directorate / USOM)

Official security notices citing this record; remediation advice is on the agency's page.

All national notices →

Technical details

Attack conditions

  • Anyone who can reach it over the internet can trigger it.
  • A low-privileged account is enough.
  • No user action is required.
  • No special conditions are required; it is repeatable.

If successful

Confidentiality
Integrity
Availability
Attack vector
Network
Attack complexity
Low
Privileges required
Low
User interaction
None
Scope
X

Weakness class (CWE)

CWE-120 · Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')

CVSS vector

CVSS: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:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

nvd-secondary

Root cause

When data is copied, the source length is not compared with the size of the destination buffer. Excess data overwrites adjacent memory.

The bug in code

The whole CWE-120 class

A representative example of this vulnerability class. Not the vendor's source code; it shows the faulty pattern and its fix.

Vulnerable

c
char buf[256];memcpy(buf, pkt->data, pkt->len);

Fixed

c
char buf[256];if (pkt->len > sizeof(buf)) {  return -EINVAL;}memcpy(buf, pkt->data, pkt->len);

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

ATT&CK techniques

—

Change log

No changes recorded on tracked fields yet. Score, KEV, exploit maturity and fix status changes appear here.

References

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records