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CVE-2024-0572· NVD / CVE Program· CNA VulDB

Totolink LR1200GB cstecgi.cgi setOpModeCfg stack-based overflow

A vulnerability, which was classified as critical, was found in Totolink LR1200GB 9.1.0u.6619_B20230130. Affected is the function setOpModeCfg of the file /cgi-bin/cstecgi.cgi. The manipulation of the argument pppoeUser leads to stack-based buffer overflow. It is possible to launch the attack remotely. The exploit has been disclosed to the public and may be used. The identifier of this vulnerability is VDB-250788. NOTE: The vendor was contacted early about this disclosure but did not respond in any way.

CriticalCVSS 9.8 · v3.1—No exploit No fix recorded

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Published
Jan 16, 2024
Updated
Jun 17, 2026
EPSS
1.3% · 70th percentile
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Report tools

JSON

Action score

39

Monitor

Low priority for now.

CVSS
39 / 40 · 9.8 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 1.3%

CISA SSVC decision

Exploitation
none
Automatable
yes
Technical impact
partial

Vulnrichment: CISA's decision-tree inputs.

CNA vs NVD score

NVD
9.8
CNA · VulDB
8.8
1.0 point gap

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

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

Affected systems

VendorProduct
totolinklr1200gb firmware
totolinklr1200gb

Affected versions

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

  • totolink lr1200gb firmware9.1.0u.6619_b20230130

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 LR1200GB

    • 9.1.0u.6619_B20230130affected

Same product

totolink: all records

Other highest-scoring records for the same primary product.

  • CVE-2023-46977TOTOLINK LR1200GB V9.1.0u.6619_B20230130 was discovered to contain a stack overflow via the password parameter in the function loginAuth.
    42Plan
  • CVE-2024-1783Totolink LR1200GB Web Interface cstecgi.cgi loginAuth stack-based overflow
    40Plan
  • CVE-2024-0295Totolink LR1200GB cstecgi.cgi setWanCfg os command injection
    40Plan
  • CVE-2024-0294Totolink LR1200GB cstecgi.cgi setUssd os command injection
    40Plan
  • CVE-2024-0293Totolink LR1200GB cstecgi.cgi setUploadSetting os command injection
    40Plan
  • CVE-2024-0292Totolink LR1200GB cstecgi.cgi setOpModeCfg os command injection
    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-2024-178337 days apartTotolink LR1200GB Web Interface cstecgi.cgi loginAuth stack-based overflow
    40Plan
  • CVE-2024-05710 days apartTotolink LR1200GB cstecgi.cgi setSmsCfg stack-based overflow
    39Monitor
  • CVE-2024-05730 days apartTotolink LR1200GB cstecgi.cgi setDiagnosisCfg stack-based overflow
    39Monitor
  • CVE-2024-05740 days apartTotolink LR1200GB cstecgi.cgi setParentalRules stack-based overflow
    39Monitor
  • CVE-2024-05750 days apartTotolink LR1200GB cstecgi.cgi setTracerouteCfg stack-based overflow
    39Monitor
  • CVE-2024-05770 days apartTotolink LR1200GB cstecgi.cgi setLanguageCfg stack-based overflow
    39Monitor

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).

Technical details

Attack conditions

  • Anyone who can reach it over the internet can trigger it.
  • No account or password is required.
  • No user action is required.
  • No special conditions are required; it is repeatable.

If successful

Confidentiality
high · data can be read
Integrity
high · data or configuration can be modified
Availability
high · the service can be disrupted
Attack vector
Network
Attack complexity
Low
Privileges required
None
User interaction
None
Scope
Unchanged
Confidentiality impact
High
Integrity impact
High
Availability impact
High

Weakness class (CWE)

CWE-121 · Stack-based Buffer Overflow

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

nvd-primary

Attack context

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

MITRE has no CAPEC/ATT&CK mapping for this CWE.

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