How severe is CVE-2003-1020?

CVE-2003-1020 has a CVSS 2.0 base score of 5.0, rated medium severity.

Is CVE-2003-1020 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (68th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2003-1020?

CVE-2003-1020 primarily affects Irssi. In total, 9 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2003-1020?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2003-1020 published?

CVE-2003-1020 was published on 2004-01-05 and last updated on 2026-06-16.

CVE-2003-1020

CVE-2003-1020 is a medium-severity vulnerability in Irssi with a CVSS 2.0 base score of 5.0. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Severity: Medium (CVSS 2.0 base score 5.0)
EPSS exploit prediction: 1% (68th percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Irssi
Published: 2004-01-05
Last modified: 2026-06-16

Description

The format_send_to_gui function in formats.c for irssi before 0.8.9 allows remote IRC users to cause a denial of service (crash).

Frequently asked questions

What is CVE-2003-1020?: The format_send_to_gui function in formats.c for irssi before 0.8.9 allows remote IRC users to cause a denial of service (crash).
How severe is CVE-2003-1020?: CVE-2003-1020 has a CVSS 2.0 base score of 5.0, rated medium severity.
Is CVE-2003-1020 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (68th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2003-1020?: CVE-2003-1020 primarily affects Irssi. In total, 9 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2003-1020?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2003-1020 published?: CVE-2003-1020 was published on 2004-01-05 and last updated on 2026-06-16.

References

Affected products (9)

cpe:2.3:a:irssi:irssi:0.8.4:*:*:*:*:*:*:*
cpe:2.3:a:irssi:irssi:0.8.5:*:*:*:*:*:*:*
cpe:2.3:a:irssi:irssi:0.8.6:*:*:*:*:*:*:*
cpe:2.3:a:irssi:irssi:0.8.7:*:*:*:*:*:*:*
cpe:2.3:a:irssi:irssi:0.8.8:*:*:*:*:*:*:*
cpe:2.3:o:mandrakesoft:mandrake_linux:9.1:*:*:*:*:*:*:*
cpe:2.3:o:mandrakesoft:mandrake_linux:9.1:*:ppc:*:*:*:*:*
cpe:2.3:o:mandrakesoft:mandrake_linux:9.2:*:*:*:*:*:*:*
cpe:2.3:o:mandrakesoft:mandrake_linux:9.2:*:amd64:*:*:*:*:*

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