How severe is CVE-2010-3753?

CVE-2010-3753 has a CVSS 2.0 base score of 6.5, rated medium severity.

Is CVE-2010-3753 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (82nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2010-3753?

CVE-2010-3753 primarily affects Xelerance Openswan. In total, 3 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2010-3753?

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

When was CVE-2010-3753 published?

CVE-2010-3753 was published on 2010-10-05 and last updated on 2026-06-16.

CVE-2010-3753

CVE-2010-3753 is a medium-severity vulnerability in Xelerance Openswan with a CVSS 2.0 base score of 6.5. 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-78.

Key facts

Severity: Medium (CVSS 2.0 base score 6.5)
EPSS exploit prediction: 2% (82nd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-78
Affected product: Xelerance Openswan
Published: 2010-10-05
Last modified: 2026-06-16

Description

programs/pluto/xauth.c in the client in Openswan 2.6.26 through 2.6.28 allows remote authenticated gateways to execute arbitrary commands via shell metacharacters in the cisco_banner (aka server_banner) field, a different vulnerability than CVE-2010-3308.

Frequently asked questions

What is CVE-2010-3753?: programs/pluto/xauth.c in the client in Openswan 2.6.26 through 2.6.28 allows remote authenticated gateways to execute arbitrary commands via shell metacharacters in the cisco_banner (aka server_banner) field, a different vulnerability than CVE-2010-3308.
How severe is CVE-2010-3753?: CVE-2010-3753 has a CVSS 2.0 base score of 6.5, rated medium severity.
Is CVE-2010-3753 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (82nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2010-3753?: CVE-2010-3753 primarily affects Xelerance Openswan. In total, 3 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2010-3753?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2010-3753 published?: CVE-2010-3753 was published on 2010-10-05 and last updated on 2026-06-16.

References

Affected products (3)

cpe:2.3:a:xelerance:openswan:2.6.26:*:*:*:*:*:*:*
cpe:2.3:a:xelerance:openswan:2.6.27:*:*:*:*:*:*:*
cpe:2.3:a:xelerance:openswan:2.6.28:*:*:*:*:*:*:*

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