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CVE-2024-35398· NVD / CVE Program· CNA mitre

TOTOLINK CP900L v4.1.5cu.798_B20221228 was discovered to contain a stack overflow via the desc parameter in the function setMacFilterRules.

CriticalCVSS 9.8 · v3.1—No exploit No fix recorded
Published
May 28, 2024
Updated
Jul 9, 2026
EPSS
0.6% · 45th percentile
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Action score

39

Monitor

Low priority for now.

CVSS
39 / 40 · 9.8 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.6%

CISA SSVC decision

Exploitation
proof of concept
Automatable
yes
Technical impact
total

Vulnrichment: CISA's decision-tree inputs.

Affected systems

VendorProduct
totolinkcp900l firmware
totolinkcp900l

Affected versions

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

  • totolink cp900l firmware4.1.5cu.798_b20221228

Same product

totolink: all records

Other highest-scoring records for the same primary product.

  • CVE-2024-35397TOTOLINK CP900L v4.1.5cu.798_B20221228 weas discovered to contain a command injection vulnerability in the NTPSyncWithHost function via the
    40Plan
  • CVE-2024-35396TOTOLINK CP900L v4.1.5cu.798_B20221228 was discovered to contain a hardcoded password for telnet in /web_cste/cgi-bin/product.ini, which all
    39Monitor
  • CVE-2024-35399TOTOLINK CP900L v4.1.5cu.798_B20221228 was discovered to contain a stack overflow via the password parameter in the function loginAuth
    35Monitor
  • CVE-2024-35395TOTOLINK CP900L v4.1.5cu.798_B20221228 was discovered to contain a hardcoded password vulnerability in /etc/shadow.sample, which allows atta
    35Monitor
  • CVE-2024-35401TOTOLINK CP900L v4.1.5cu.798_B20221228 was discovered to contain a command injection vulnerability via the FileName parameter in the UploadF
    23Monitor
  • CVE-2024-35400TOTOLINK CP900L v4.1.5cu.798_B20221228 was discovered to contain a stack overflow via the desc parameter in the function SetPortForwardRules
    21Monitor

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.

No credits in the CNA record.

Variant candidates

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

  • CVE-2024-354000 days apartTOTOLINK CP900L v4.1.5cu.798_B20221228 was discovered to contain a stack overflow via the desc parameter in the function SetPortForwardRules
    21Monitor

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

CVSS vector

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

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

—

Noroxi analysis

No Noroxi analysis for this record yet

We don't hand-write analysis for all 385,000+ vulnerabilities; that wouldn't be honest. For notable, high-impact vulnerabilities our team writes the mechanism, detection and remediation steps.

We use this product, ask for help

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