How severe is CVE-2010-1099?

CVE-2010-1099 has a CVSS 2.0 base score of 5.0, rated medium severity.

Is CVE-2010-1099 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (66th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2010-1099?

CVE-2010-1099 affects Apple Safari. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2010-1099?

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

When was CVE-2010-1099 published?

CVE-2010-1099 was published on 2010-03-24 and last updated on 2026-06-16.

CVE-2010-1099

CVE-2010-1099 is a medium-severity vulnerability in Apple Safari 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. The underlying weakness is classified as CWE-189.

Key facts

Severity: Medium (CVSS 2.0 base score 5.0)
EPSS exploit prediction: 1% (66th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-189
Affected product: Apple Safari
Published: 2010-03-24
Last modified: 2026-06-16

Description

Integer overflow in Apple Safari allows remote attackers to bypass intended port restrictions on outbound TCP connections via a port number outside the range of the unsigned short data type, as demonstrated by a value of 65561 for TCP port 25.

Frequently asked questions

What is CVE-2010-1099?: Integer overflow in Apple Safari allows remote attackers to bypass intended port restrictions on outbound TCP connections via a port number outside the range of the unsigned short data type, as demonstrated by a value of 65561 for TCP port 25.
How severe is CVE-2010-1099?: CVE-2010-1099 has a CVSS 2.0 base score of 5.0, rated medium severity.
Is CVE-2010-1099 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (66th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2010-1099?: CVE-2010-1099 affects Apple Safari. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2010-1099?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2010-1099 published?: CVE-2010-1099 was published on 2010-03-24 and last updated on 2026-06-16.

References

Affected products (1)

cpe:2.3:a:apple:safari:*:*:*:*:*:*:*:*

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