How severe is CVE-2013-3436?

CVE-2013-3436 has a CVSS 2.0 base score of 5.0, rated medium severity.

Is CVE-2013-3436 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (70th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2013-3436?

CVE-2013-3436 affects Cisco Ios. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2013-3436?

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

When was CVE-2013-3436 published?

CVE-2013-3436 was published on 2013-07-19 and last updated on 2026-06-16.

CVE-2013-3436

CVE-2013-3436 is a medium-severity vulnerability in Cisco Ios 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-264.

Key facts

Severity: Medium (CVSS 2.0 base score 5.0)
EPSS exploit prediction: 1% (70th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-264
Affected product: Cisco Ios
Published: 2013-07-19
Last modified: 2026-06-16

Description

The default configuration of the Group Encrypted Transport VPN (GET VPN) feature on Cisco IOS uses an improper mechanism for enabling Group Domain of Interpretation (GDOI) traffic flow, which allows remote attackers to bypass the encryption policy via certain uses of UDP port 848, aka Bug ID CSCui07698.

Frequently asked questions

What is CVE-2013-3436?: The default configuration of the Group Encrypted Transport VPN (GET VPN) feature on Cisco IOS uses an improper mechanism for enabling Group Domain of Interpretation (GDOI) traffic flow, which allows remote attackers to bypass the encryption policy via certain uses of UDP port 848, aka Bug ID CSCui07698.
How severe is CVE-2013-3436?: CVE-2013-3436 has a CVSS 2.0 base score of 5.0, rated medium severity.
Is CVE-2013-3436 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (70th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2013-3436?: CVE-2013-3436 affects Cisco Ios. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2013-3436?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2013-3436 published?: CVE-2013-3436 was published on 2013-07-19 and last updated on 2026-06-16.

References

Affected products (1)

cpe:2.3:o:cisco:ios:-:*:*:*:*:*:*:*

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