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CVE-2025-4732· NVD / CVE Program· CNA VulDB

TOTOLINK A3002R/A3002RU HTTP POST Request formFilter buffer overflow

A vulnerability classified as critical was found in TOTOLINK A3002R and A3002RU 3.0.0-B20230809.1615. This vulnerability affects unknown code of the file /boafrm/formFilter of the component HTTP POST Request Handler. The manipulation of the argument ip6addr leads to buffer overflow. The attack can be initiated remotely. The exploit has been disclosed to the public and may be used.

HighCVSS 8.7 · v4.0—No exploit No fix recorded
Published
May 15, 2025
Updated
Jun 17, 2026
EPSS
0.8% · 55th percentile
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Report tools

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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 · 0.8%

CISA SSVC decision

Exploitation
none
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.

Affected systems

VendorProduct
totolinka3002r firmware
totolinka3002r
totolinka3002ru firmware
totolinka3002ru

Affected versions

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

  • totolink a3002r firmware3.0.0-b20230809.1615
  • totolink a3002ru firmware3.0.0-b20230809.1615

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 A3002R

    • 3.0.0-B20230809.1615affected

  • TOTOLINK A3002RU

    • 3.0.0-B20230809.1615affected

Same product

totolink: all records

Other highest-scoring records for the same primary product.

  • CVE-2025-45858TOTOLINK A3002R v4.0.0-B20230531.1404 was discovered to contain a command injection vulnerability via the FUN_00459fdc function.
    42Plan
  • CVE-2025-25579TOTOLINK A3002R V4.0.0-B20230531.1404 is vulnerable to Command Injection in /bin/boa via bandstr.
    42Plan
  • CVE-2025-55591TOTOLINK-A3002R v4.0.0-B20230531.1404 was discovered to contain a command injection vulnerability in the devicemac parameter in the formMapD
    41Plan
  • CVE-2025-45863TOTOLINK A3002R v4.0.0-B20230531.1404 was discovered to contain a buffer overflow via the macstr parameter in the formMapDelDevice interface
    39Monitor
  • CVE-2025-45865TOTOLINK A3002R v4.0.0-B20230531.1404 was discovered to contain a buffer overflow via the dnsaddr parameter in the formDhcpv6s interface.
    39Monitor
  • CVE-2025-45861TOTOLINK A3002R v4.0.0-B20230531.1404 was discovered to contain a buffer overflow via the routername parameter in the formDnsv6 interface.
    39Monitor

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-2025-47300 days apartTOTOLINK A3002R/A3002RU HTTP POST Request formMapDel buffer overflow
    34Monitor
  • CVE-2025-47310 days apartTOTOLINK A3002R/A3002RU HTTP POST Request formPortFw buffer overflow
    34Monitor
  • CVE-2025-47330 days apartTOTOLINK A3002R/A3002RU HTTP POST Request formIpQoS buffer overflow
    34Monitor
  • CVE-2025-614932 days apartTOTOLINK A3002R HTTP POST Request formSysLog buffer overflow
    29Monitor
  • CVE-2025-616433 days apartTOTOLINK A3002R HTTP POST Request formMultiAP buffer overflow
    29Monitor
  • CVE-2025-648738 days apartTOTOLINK A3002R formRoute stack-based overflow
    29Monitor

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.
  • 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-119 · Improper Restriction of Operations within the Bounds of a Memory Buffer

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

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