NVD / CVE Program· CNA zdi

CVE-2025-5828: Autel MaxiCharger AC Wallbox Commercial wLength Buffer Overflow Remote Code Execution Vulnerability

Noroxi assessment

Priority: Monitor (action score 27/100)

The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
Probability of exploitation in the next 30 days: 0.34% (FIRST EPSS).
Physical access to the device is required. No account or password is required. No user action is required. No special conditions are required; it is repeatable.
According to the record, no fixed version is available yet.

Low priority for now. Update when a fix is released; follow the vendor's advisory.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · FIRST EPSS

Autel MaxiCharger AC Wallbox Commercial wLength Buffer Overflow Remote Code Execution Vulnerability. This vulnerability allows physically present attackers to execute arbitrary code on affected installations of Autel MaxiCharger AC Wallbox Commercial EV chargers. Authentication is not required to exploit this vulnerability. The specific flaw exists within the handling of USB frame packets. The issue results from the lack of proper validation of the length of user-supplied data prior to copying it to a fixed-length buffer. An attacker can leverage this vulnerability to execute code in the context of the device. Was ZDI-CAN-26328.

MediumCVSS 6.8 · v3.0—No exploit No fix recorded

Published: Jun 25, 2025
Updated: Jun 17, 2026
EPSS: 0.3% · 27th percentile
CWE: CWE-120

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Action score

Monitor

Low priority for now.

CVSS: 27 / 40 · 6.8 / 10
CISA KEV: 0 / 30 · Not listed
EPSS: 0 / 30 · 0.3%

CISA SSVC decision

Exploitation: none
Automatable: no
Technical impact: total

Vulnrichment: CISA's decision-tree inputs.

CNA vs NVD score

NVD: —
CNA · zdi: 6.8; NVD has not scored this yet; the score shown is the CNA’s.

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

Get told when this record changes

Not in KEV: no record of exploitation in the wild
No public exploit code on record
No fixed version yet

If any of these changes, we'll tell you in the daily email digest.

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Noroxi analysis

What does it mean in your environment?

The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.

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Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

Vendor	Product	CPE
autel	maxicharger ac elite business c50 firmware	cpe:2.3:o:autel:maxicharger_ac_elite_business_c50_firmware
autel	maxicharger ac elite business c50	cpe:2.3:h:autel:maxicharger_ac_elite_business_c50
autel	maxicharger ac pro firmware	cpe:2.3:o:autel:maxicharger_ac_pro_firmware
autel	maxicharger ac pro	cpe:2.3:h:autel:maxicharger_ac_pro
autel	maxicharger ac ultra firmware	cpe:2.3:o:autel:maxicharger_ac_ultra_firmware
autel	maxicharger ac ultra	cpe:2.3:h:autel:maxicharger_ac_ultra
autel	maxicharger dc compact mobile firmware	cpe:2.3:o:autel:maxicharger_dc_compact_mobile_firmware
autel	maxicharger dc compact mobile	cpe:2.3:h:autel:maxicharger_dc_compact_mobile
autel	maxicharger dc compact pedestal firmware	cpe:2.3:o:autel:maxicharger_dc_compact_pedestal_firmware
autel	maxicharger dc compact pedestal	cpe:2.3:h:autel:maxicharger_dc_compact_pedestal
autel	maxicharger dc fast firmware	cpe:2.3:o:autel:maxicharger_dc_fast_firmware
autel	maxicharger dc fast	cpe:2.3:h:autel:maxicharger_dc_fast

and 6 more

Affected versions

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

autel maxicharger ac elite business c50 firmwarebefore 1.39.51
autel maxicharger ac elite business c50 firmwarebefore 1.56.51
autel maxicharger ac pro firmwarebefore 1.39.51
autel maxicharger ac pro firmwarebefore 1.56.51
autel maxicharger ac ultra firmwarebefore 1.39.51
autel maxicharger ac ultra firmwarebefore 1.56.51
autel maxicharger dc compact mobile firmwarebefore 1.39.51
autel maxicharger dc compact mobile firmwarebefore 1.56.51
autel maxicharger dc compact pedestal firmwarebefore 1.39.51
autel maxicharger dc compact pedestal firmwarebefore 1.56.51
autel maxicharger dc fast firmwarebefore 1.39.51
autel maxicharger dc fast firmwarebefore 1.56.51
autel maxicharger dc hipower firmwarebefore 1.39.51
autel maxicharger dc hipower firmwarebefore 1.56.51
autel maxicharger dh480 firmwarebefore 1.39.51
autel maxicharger dh480 firmwarebefore 1.56.51
autel maxicharger single charger firmwarebefore 1.39.51
autel maxicharger single charger firmwarebefore 1.56.51

Versions reported by the vendor

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

Autel Autel MaxiCharger AC Wallbox Commercial
- 1.36.00affected

Same product

autel: all records

Other highest-scoring records for the same primary product.

CVE-2025-5830Autel MaxiCharger AC Wallbox Commercial DLB_SlaveRegister Heap-based Buffer Overflow Remote Code Execution Vulnerability
35Monitor
CVE-2025-5827Autel MaxiCharger AC Wallbox Commercial ble_process_esp32_msg Stack-based Buffer Overflow Remote Code Execution Vulnerability
35Monitor
CVE-2025-5822Autel MaxiCharger AC Wallbox Commercial Technician API Incorrect Authorization Privilege Escalation Vulnerability
35Monitor

Published before and after this one in the same product

← EarlierCVE-2025-5825Jun 25, 2025 · Autel MaxiCharger AC Wallbox Commercial Firmware Downgrade Remote Code Execution Vulnerability
30Monitor
← EarlierCVE-2025-5826Jun 25, 2025 · Autel MaxiCharger AC Wallbox Commercial ble_process_esp32_msg Misinterpretation of Input Vulnerability
25Monitor
Later →CVE-2025-5829Jun 25, 2025 · Autel MaxiCharger AC Wallbox Commercial autocharge Stack-based Buffer Overflow Remote Code Execution Vulnerability
27Monitor

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.

No nightly-computed relations.

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

Physical access to the device is required.
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: Physical
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:3.0/AV:P/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

1char buf[256];
2memcpy(buf, pkt->data, pkt->len);

Fixed

1char buf[256];
2if (pkt->len > sizeof(buf)) {
3  return -EINVAL;
4}
5memcpy(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)

ATT&CK techniques

—

Change log

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

References

www.zerodayinitiative.com/advisories/ZDI-25-347/

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

All records