How severe is CVE-2012-0300?

CVE-2012-0300 has a CVSS 2.0 base score of 3.3, rated low severity.

Is CVE-2012-0300 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (52nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2012-0300?

CVE-2012-0300 affects Symantec Message Filter. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2012-0300?

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

When was CVE-2012-0300 published?

CVE-2012-0300 was published on 2012-07-05 and last updated on 2026-06-16.

CVE-2012-0300

CVE-2012-0300 is a low-severity vulnerability in Symantec Message Filter with a CVSS 2.0 base score of 3.3. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-264.

Key facts

Severity: Low (CVSS 2.0 base score 3.3)
EPSS exploit prediction: 1% (52nd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-264
Affected product: Symantec Message Filter
Published: 2012-07-05
Last modified: 2026-06-16

Description

Brightmail Control Center in Symantec Message Filter 6.3 does not properly restrict establishment of sessions to the listening port, which allows remote attackers to obtain potentially sensitive version information via unspecified vectors.

Frequently asked questions

What is CVE-2012-0300?: Brightmail Control Center in Symantec Message Filter 6.3 does not properly restrict establishment of sessions to the listening port, which allows remote attackers to obtain potentially sensitive version information via unspecified vectors.
How severe is CVE-2012-0300?: CVE-2012-0300 has a CVSS 2.0 base score of 3.3, rated low severity.
Is CVE-2012-0300 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (52nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2012-0300?: CVE-2012-0300 affects Symantec Message Filter. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2012-0300?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2012-0300 published?: CVE-2012-0300 was published on 2012-07-05 and last updated on 2026-06-16.

References

Affected products (1)

cpe:2.3:a:symantec:message_filter:*:*:*:*:*:*:*:*

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CVE-2012-0303 — Medium (CVSS 6.8): Multiple cross-site request forgery (CSRF) vulnerabilities in Brightmail Control Center in Symantec Message Filter 6.3…
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