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MS Paint Remote Code Execution Vulnerability

https://www.cve.org/CVERecord?id=CVE-2026-83844
54•kuberwastaken•1h ago

Comments

falcor84•46m ago
Wow! At first sight I was sure it was a joke, but no. What a time...

https://msrc.microsoft.com/update-guide/vulnerability/CVE-20...

dboreham•41m ago
Presumably this is like many other graphics tool vulnerabilities this works by the attacker persuading a user to open a file that exercises the bug. Not terribly unusual.
yread•34m ago
I don't think so:

> User Interaction: None

> Out-of-bounds read in Windows Paint allows an unauthorized attacker to execute code over a network.

criddell•21m ago
> An unauthenticated attacker could exploit this vulnerability by sending a specially crafted packet to an affected service over the network.

What server is MS Paint running or what services does it provide?

Edit: Apparently you can use it to print an image from the command-line. Is that how this is being exploited?

lakeviewterrace•7m ago
IIS (Internet Impasto Server)
stygiansonic•17m ago
When they find a CVE RCE in minesweeper then you know it’s all over
lakeviewterrace•2m ago
Of course the valuable link is down-weighted/buried in the HN discussion...

>Publicly disclosed >No

>Exploited >No

>Exploitability assessment >Exploitation Less Likely

tosti•43m ago
Code execution, sure, paint has been used to write executable code too, so why not.

But remote? How

VorpalWay•33m ago
I'm thankfully out of the loop on Windows these days, but as I remember it Paint did not have any network features? Is that still true? If if is, maybe it is a misfiling of the CVE and it isn't remote?

Or are they chaining a browser auto opening a download in paint, (but browsers shouldn't do that)...

kuboble•24m ago
These days paint has copilot...
robotnikman•18m ago
This is the only network feature paint has iirc, so that's probably it.
gregschlom•33m ago
"An unauthenticated attacker could exploit this vulnerability by sending a specially crafted packet to an affected service over the network. Successful exploitation could allow the attacker to execute code on the target system. No authentication or user interaction is required.."

Still, the question remains... How?

IanCal•25m ago
It mentions that it may rely on other services or security measures running- I wonder if there’s something like this hitting a firewall or av and then that calling out to paint to check file type or size out something like that?
layer8•23m ago
Fixed in version 11.2609.401.0.
TZubiri•10m ago
>Exploit Code Maturity

>Unproven

>Remediation Level

>Official Fix

>Report Confidence

>Confirmed

I really like these secondary scoring factors, not just scoring the vuln itself, but how it's being attacked.

arm32•8m ago
Patch your MS Paint, everybody!
Den_VR•22m ago
The direct implication is that current generations of ms paint are a “service over the network.” Probably a theoretically possible RPC end point of svchost.exe
TZubiri•13m ago
Maybe because a .bmp file could be sent remotely.

Or maybe after the .bmp file is executed, it can install something that opens an outbound TCP connection to its C2, and thus can receive commands. Would not need admin privileges because it doesn't open a port, just 'outbound' connections, like a long-poll.

Sohcahtoa82•2m ago
Because the definition of "remote" has been expanded in the name of resume-driven development to include sending a malicious file that a victim has to open.

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MS Paint Remote Code Execution Vulnerability

https://www.cve.org/CVERecord?id=CVE-2026-83844
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