# What is CVE-2023-40513?

> CVE-2023-40513 is a medium-severity flaw (CVSS 6.5) in Simple Editor from Lg, published on 3 May 2024. It is not on the list of flaws known to be exploited today. The latest forecast puts its chance of use in the next 30 days at 2.9%. If you run an affected version, plan in the vendor’s fix.

Canonical page: https://www.precursorintelligence.com/what-is/cve-2023-40513

## At a glance

- **Verdict:** Plan it in. No sign of exploitation and a low forecast. Patch it in your normal update cycle.
- **Precursor Intelligence risk score:** 25 out of 100 (Low); action: Monitor. Kept up to date as the evidence changes.
- **Severity:** Medium (CVSS 6.5 out of 10)
- **Known to be exploited:** No, not on the list of flaws known to be exploited today
- **Chance of use in the next 30 days:** 2.9% (latest exploit-likelihood forecast)
- **Published:** 3 May 2024
- **Record last updated:** 17 June 2026
- **Main product:** Simple Editor from Lg
- **Affected products:** 1

## What is CVE-2023-40513? In plain terms

It can be attacked from anywhere on the internet with an ordinary user account, and nobody has to click anything. If it works, the attacker can read data.

### The official description

LG Simple Editor UserManageController getImageByFilename Directory Traversal Information Disclosure Vulnerability. This vulnerability allows remote attackers to disclose sensitive information on affected installations of LG Simple Editor. Although authentication is required to exploit this vulnerability, the existing authentication mechanism can be bypassed.

The specific flaw exists within the getImageByFilename method in the UserManageController class. The issue results from the lack of proper validation of a user-supplied path prior to using it in file operations. An attacker can leverage this vulnerability to disclose information in the context of SYSTEM.
. Was ZDI-CAN-20015.

### What kind of flaw is it?

- CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

### How an attack on it works

- Where an attacker can be: Anywhere on the internet
- How hard it is to pull off: Easy: no special conditions
- Login needed first: An ordinary user account
- Does someone have to click: No, nobody has to do anything
- What an attacker gets: Can read data

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

## Is CVE-2023-40513 being exploited? Not that we know of

It is not on the list of flaws known to be exploited today. The latest forecast puts the chance of it being used in the next 30 days at 2.9%. That can change at any time, which is why we keep watching.

Exploit likelihood over the last 7 days: 2.9%, 2.9%, 2.9%, 2.9%, 2.9%, 2.9%, 2.9%.

### Timeline

- 3 May 2024: Published
- 17 June 2026: Record last updated

### How Precursor Intelligence ranks it

CVE-2023-40513 scores **25 out of 100 (Low)**, with the action "Monitor".

Every published flaw gets a risk score from 0 to 100, kept up to date as the evidence changes. Four things go into the score, from the one that counts most to the ones that count less:

- Evidence it is being exploited: biggest factor
- How severe it is: strong factor
- How widely exposed it is: smaller factor
- Threat activity around it: smaller factor

85 and above is Critical. Anything confirmed as exploited is always marked for an emergency patch, whatever its score. When this flaw matches software you track, it lands in your list with its score and the reasons behind it.

## Who is affected by CVE-2023-40513?

The published record lists 1 product.

- [Simple Editor](https://www.precursorintelligence.com/product/lg/simple_editor) by [Lg](https://www.precursorintelligence.com/vendors/lg) (Application): 3.21.0

## How do I fix CVE-2023-40513?

1. **Check whether you run it.** Compare your versions with the affected products above. Not sure what you run? Precursor Intelligence can work it out from your public website, or you can pick it from a list.
2. **Apply the vendor’s fix.** Install the latest update from the vendor. The references list where the vendor has published details.
3. **If you can’t patch today.** Follow any mitigation the vendor publishes, and limit who can reach the affected system from the internet until the update is in.
4. **Keep an eye on it.** Track the product and we tell you as soon as we spot this flaw on the list of exploited flaws, or a jump in its exploit likelihood.

### References

- [zerodayinitiative.com](https://www.zerodayinitiative.com/advisories/ZDI-23-1195/) (Third-party advisory)

## Questions

### What is CVE-2023-40513?

CVE-2023-40513 is a medium-severity flaw in Simple Editor from Lg, published on 3 May 2024. It can be attacked from anywhere on the internet with an ordinary user account, and nobody has to click anything. If it works, the attacker can read data.

### How serious is CVE-2023-40513?

It scores 6.5 out of 10 on the CVSS severity scale, which is medium. Our risk score for CVE-2023-40513 is 25 out of 100, which is Low. Its action is "Monitor". No sign of exploitation and a low forecast. Patch it in your normal update cycle.

### Is CVE-2023-40513 being exploited?

It is not on the list of flaws known to be exploited today. The latest forecast puts the chance of it being used in the next 30 days at 2.9%. That can change at any time, which is why we keep watching.

### Which versions does CVE-2023-40513 affect?

For Simple Editor from Lg: 3.21.0.

### How do I fix CVE-2023-40513?

Install the update the vendor names in its advisory. If you can't patch today, follow the vendor's mitigation and limit who can reach the affected system from the internet.

## Does CVE-2023-40513 affect you?

Precursor Intelligence keeps checking for you:

- **Tell us what you run.** Pick your software from a list, or let us work it out from your website.
- **We match it to every flaw.** Over 400,000 published flaws, checked against your list.
- **Ranked by real-world risk.** Every flaw gets a 0 to 100 risk score, kept up to date, led by evidence criminals are using it.
- **Told as soon as we know.** An alert by email, in the app or by webhook to your own tools.

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