CVE-2004-1558

7.5 HIGH 71% exploit odds Fix listed Code execution

What it is

Multiple stack-based buffer overflows in YPOPs! (aka YahooPOPS) 0.4 through 0.6 allow remote attackers to cause a denial of service (crash) and possibly execute arbitrary code via a long (1) POP3 USER command or (2) SMTP request.

At a glance

Exploitability: Can be exploited over the network without logging in. Limited direct impact.
Exploit odds: 71.1% chance of exploitation in the next 30 days (EPSS). Higher than most.
Fix: A patch, advisory or fixed version is referenced. Upgrade or apply it.

Timeline

2004-12-31 05:00 UTC PublishedDisclosed publicly on CVE.org and NVD
2026-06-16 22:07 UTC Last updatedMost recent change to the record

Why it ranks here

Exploited in the wild: no, CISA does not list it.
Exploit odds: 71.1% in the next 30 days (EPSS).
Severity: 7.5 HIGH (CVSS).
Fix: a patch or advisory is linked.

Details

Published: 2004-12-31 05:00 UTC
Last modified: 2026-06-16 22:07 UTC
Exploit probability: 71.1% · EPSS, next 30 days
Record status: Modified

Affected

Ypops 0.4
Ypops 0.4.1
Ypops 0.4.2
Ypops 0.4.3
Ypops 0.4.4
Ypops 0.4.5
Ypops 0.4.6
Ypops 0.5

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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Fix and advisories

References

NVD record · CVE.org record