How severe is CVE-2001-1126?

CVE-2001-1126 has a CVSS 2.0 base score of 5.0, rated medium severity.

Is CVE-2001-1126 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (83rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2001-1126?

CVE-2001-1126 primarily affects Symantec Liveupdate. In total, 3 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2001-1126?

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

When was CVE-2001-1126 published?

CVE-2001-1126 was published on 2001-10-05 and last updated on 2026-06-16.

CVE-2001-1126

CVE-2001-1126 is a medium-severity vulnerability in Symantec Liveupdate 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: 3% (83rd percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Symantec Liveupdate
Published: 2001-10-05
Last modified: 2026-06-16

Description

Symantec LiveUpdate 1.4 through 1.6, and possibly later versions, allows remote attackers to cause a denial of service (flood) via DNS spoofing of the update.symantec.com site.

Frequently asked questions

What is CVE-2001-1126?: Symantec LiveUpdate 1.4 through 1.6, and possibly later versions, allows remote attackers to cause a denial of service (flood) via DNS spoofing of the update.symantec.com site.
How severe is CVE-2001-1126?: CVE-2001-1126 has a CVSS 2.0 base score of 5.0, rated medium severity.
Is CVE-2001-1126 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (83rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2001-1126?: CVE-2001-1126 primarily affects Symantec Liveupdate. In total, 3 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2001-1126?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2001-1126 published?: CVE-2001-1126 was published on 2001-10-05 and last updated on 2026-06-16.

References

Affected products (3)

cpe:2.3:a:symantec:liveupdate:1.4:*:*:*:*:*:*:*
cpe:2.3:a:symantec:liveupdate:1.5:*:*:*:*:*:*:*
cpe:2.3:a:symantec:liveupdate:1.6:*:*:*:*:*:*:*

More vulnerabilities in Symantec Liveupdate

CVE-2001-1125 — Critical (CVSS 9.8): Symantec LiveUpdate before 1.6 does not use cryptography to ensure the integrity of download files, which allows remote…
CVE-2006-1836 — Medium (CVSS 6.8): Untrusted search path vulnerability in unspecified components in Symantec LiveUpdate for Macintosh 3.0.0 through 3.5.0…
CVE-2002-0344 — Medium (CVSS 5.0): Symantec LiveUpdate 1.5 and earlier in Norton Antivirus stores usernames and passwords for a local LiveUpdate server in…
CVE-2001-0549 — Medium (CVSS 4.6): Symantec LiveUpdate 1.5 stores proxy passwords in cleartext in a registry key, which could allow local users to obtain…

All CVEs affecting Symantec Liveupdate →