How severe is CVE-2013-5527?

CVE-2013-5527 has a CVSS 2.0 base score of 5.7, rated medium severity.

Is CVE-2013-5527 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-2013-5527?

CVE-2013-5527 primarily affects Cisco Ios. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2013-5527?

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

When was CVE-2013-5527 published?

CVE-2013-5527 was published on 2013-10-10 and last updated on 2026-06-16.

CVE-2013-5527

CVE-2013-5527 is a medium-severity vulnerability in Cisco Ios with a CVSS 2.0 base score of 5.7. 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-20.

Key facts

Severity: Medium (CVSS 2.0 base score 5.7)
EPSS exploit prediction: 1% (52nd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-20
Affected product: Cisco Ios
Published: 2013-10-10
Last modified: 2026-06-16

Description

The OSPF functionality in Cisco IOS and IOS XE allows remote attackers to cause a denial of service (device reload) via crafted options in an LSA type 11 packet, aka Bug ID CSCui21030.

Frequently asked questions

What is CVE-2013-5527?: The OSPF functionality in Cisco IOS and IOS XE allows remote attackers to cause a denial of service (device reload) via crafted options in an LSA type 11 packet, aka Bug ID CSCui21030.
How severe is CVE-2013-5527?: CVE-2013-5527 has a CVSS 2.0 base score of 5.7, rated medium severity.
Is CVE-2013-5527 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-2013-5527?: CVE-2013-5527 primarily affects Cisco Ios. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2013-5527?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2013-5527 published?: CVE-2013-5527 was published on 2013-10-10 and last updated on 2026-06-16.

References

Affected products (2)

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

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