CVE-2012-3423

7.5 HIGH 6% exploit odds Fix listed Memory safety Web app

What it is

The IcedTea-Web plugin before 1.2.1 does not properly handle NPVariant NPStrings without NUL terminators, which allows remote attackers to cause a denial of service (crash), obtain sensitive information from memory, or execute arbitrary code via a crafted Java applet.

At a glance

Exploitability: Can be exploited over the network without logging in. Limited direct impact.
Exploit odds: 6.2% chance of exploitation in the next 30 days (EPSS).
Fix: A patch, advisory or fixed version is referenced. Upgrade or apply it.

Timeline

2012-08-07 21:55 UTC PublishedDisclosed publicly on CVE.org and NVD
2026-06-16 23:43 UTC Last updatedMost recent change to the record

Why it ranks here

Exploited in the wild: no, CISA does not list it.
Exploit odds: 6.2% in the next 30 days (EPSS).
Severity: 7.5 HIGH (CVSS).
Fix: a patch or advisory is linked.

Details

Published: 2012-08-07 21:55 UTC
Last modified: 2026-06-16 23:43 UTC
Exploit probability: 6.2% · EPSS, next 30 days
Weakness: CWE-119 · Buffer errors
Record status: Modified

Affected

Redhat icedtea-web ≤ 1.2
Redhat icedtea-web 1.0
Redhat icedtea-web 1.1

Attack profile CVSS 2.0 · 7.5

Attack vector: Network
Complexity: Low
Authentication: None
Confidentiality: Partial
Integrity: Partial
Availability: Partial

Raw vector

AV:N/AC:L/Au:N/C:P/I:P/A:P

Is it in your code?

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Read https://cve-list.com/agent/cve/CVE-2012-3423.md and follow it. Check whether this project is affected by CVE-2012-3423. Read only. Don't change anything and don't upload my code. Tell me yes, no or not sure, with the file as proof.

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Fix and advisories

References

NVD record · CVE.org record