D-Link DIR-619L B1 formAdvNetwork buffer overflow
A vulnerability, which was classified as critical, was found in D-Link DIR-619L B1 2.06. Affected is the function formAdvNetwork of the file /goform/formAdvNetwork. The manipulation of the argument curTime leads to buffer overflow. It is possible to launch the attack remotely. The exploit has been disclosed to the public and may be used.
- Published
- Oct 7, 2024
- Updated
- Jun 17, 2026
- EPSS
- 1.3% · 70th percentile
- CWE
- CWE-120
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Report tools
Action score
34
Monitor
Low priority for now.
- CVSS
- 34 / 40 · 8.7 / 10
- CISA KEV
- 0 / 30 · Not listed
- EPSS
- 0 / 30 · 1.3%
CISA SSVC decision
- Exploitation
- proof of concept
- Automatable
- no
- Technical impact
- partial
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
| Vendor | Product | CPE |
|---|---|---|
| dlink | dir-619l firmware | cpe:2.3:o:dlink:dir-619l_firmware |
| dlink | dir-619l | cpe:2.3:h:dlink:dir-619l |
Affected versions
NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.
- dlink dir-619l firmware2.06b1
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.
D-Link DIR-619L B1
- 2.06affected
Same product
dlink: all recordsOther highest-scoring records for the same primary product.
- CVE-2023-37791D-Link DIR-619L v2.04(TW) was discovered to contain a stack overflow via the curTime parameter at /goform/formLogin.43Plan
- CVE-2023-43869D-Link DIR-619L B1 2.02 is vulnerable to Buffer Overflow via formSetWAN_Wizard56 function.39Monitor
- CVE-2020-19320Buffer overflow vulnerability in DLINK 619L version B 2.06beta via the curTime parameter on login.39Monitor
- CVE-2020-19319Buffer overflow vulnerability in DLINK 619L version B 2.06beta via the FILECODE parameter on login.39Monitor
- CVE-2025-4452D-Link DIR-619L formSetWizard2 buffer overflow35Monitor
- CVE-2025-4451D-Link DIR-619L formSetWAN_Wizard52 buffer overflow35Monitor
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.
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 researchersFinders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.
- yhryhryhr_miemie (VulDB User)reporter
Variant candidates
Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.
- CVE-2020-19319392 days apartBuffer overflow vulnerability in DLINK 619L version B 2.06beta via the FILECODE parameter on login.39Monitor
- CVE-2020-19320392 days apartBuffer overflow vulnerability in DLINK 619L version B 2.06beta via the curTime parameter on login.39Monitor
- CVE-2024-95660 days apartD-Link DIR-619L B1 formDeviceReboot buffer overflow35Monitor
- CVE-2024-95700 days apartD-Link DIR-619L B1 formEasySetTimezone buffer overflow35Monitor
- CVE-2024-99096 days apartD-Link DIR-619L B1 formSetMuti buffer overflow35Monitor
- CVE-2024-99156 days apartD-Link DIR-619L B1 formVirtualServ buffer overflow35Monitor
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-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 classA representative example of this vulnerability class. Not the vendor's source code; it shows the faulty pattern and its fix.
Vulnerable
char buf[256];memcpy(buf, pkt->data, pkt->len);Fixed
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.
Attack patterns (CAPEC)
- Buffer Overflow via Environment VariablesCAPEC-10likelihood: High · High
- Overflow BuffersCAPEC-100likelihood: High · Very High
- Client-side Injection-induced Buffer OverflowCAPEC-14likelihood: Medium · High
- Filter Failure through Buffer OverflowCAPEC-24likelihood: High · High
- MIME ConversionCAPEC-42likelihood: High · High
- Overflow Binary Resource FileCAPEC-44likelihood: High · Very High
- Buffer Overflow via Symbolic LinksCAPEC-45likelihood: High · High
- Overflow Variables and TagsCAPEC-46likelihood: High · High
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 helpChange 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.