What is the severity of CVE-2025-3031?

CVE-2025-3031 is considered a moderate severity vulnerability that allows an attacker to read sensitive data from the stack.

How do I fix CVE-2025-3031?

To fix CVE-2025-3031, upgrade Firefox or Thunderbird to version 137 or later.

What versions are affected by CVE-2025-3031?

CVE-2025-3031 affects Firefox versions earlier than 137 and Thunderbird versions earlier than 137.

What types of attacks can exploit CVE-2025-3031?

An attacker can exploit CVE-2025-3031 to read 32 bits of values that are spilled onto the stack in JIT compiled functions.

Is there a workaround for CVE-2025-3031?

There is no known workaround for CVE-2025-3031, so updating to the latest versions is recommended.

Vulnerability/
CVE-2025-3031

medium

6.5

CWE

200

EPSS

0.027%

1/4/2025

CVE-2025-3031: Infoleak

First published: Tue Apr 01 2025(Updated: )

An attacker could read 32 bits of values spilled onto the stack in a JIT compiled function.

Credit: security@mozilla.org

Affected Software	Affected Version	How to fix
Firefox	<137	137
Thunderbird	<137	137

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Reference Links

Parent vulnerabilities

(Appears in the following advisories)

Peer vulnerabilities

(Found alongside the following vulnerabilities)

Frequently Asked Questions

What is the severity of CVE-2025-3031?
CVE-2025-3031 is considered a moderate severity vulnerability that allows an attacker to read sensitive data from the stack.
How do I fix CVE-2025-3031?
To fix CVE-2025-3031, upgrade Firefox or Thunderbird to version 137 or later.
What versions are affected by CVE-2025-3031?
CVE-2025-3031 affects Firefox versions earlier than 137 and Thunderbird versions earlier than 137.
What types of attacks can exploit CVE-2025-3031?
An attacker can exploit CVE-2025-3031 to read 32 bits of values that are spilled onto the stack in JIT compiled functions.
Is there a workaround for CVE-2025-3031?
There is no known workaround for CVE-2025-3031, so updating to the latest versions is recommended.

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source/Mozilla
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agent/event
collector/nvd-api
source/NVD
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vendor/mozilla
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canonical/thunderbird

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Frequently Asked Questions

What is the severity of CVE-2025-3031?
CVE-2025-3031 is considered a moderate severity vulnerability that allows an attacker to read sensitive data from the stack.
How do I fix CVE-2025-3031?
To fix CVE-2025-3031, upgrade Firefox or Thunderbird to version 137 or later.
What versions are affected by CVE-2025-3031?
CVE-2025-3031 affects Firefox versions earlier than 137 and Thunderbird versions earlier than 137.
What types of attacks can exploit CVE-2025-3031?
An attacker can exploit CVE-2025-3031 to read 32 bits of values that are spilled onto the stack in JIT compiled functions.
Is there a workaround for CVE-2025-3031?
There is no known workaround for CVE-2025-3031, so updating to the latest versions is recommended.