How severe is CVE-2006-1927?

CVE-2006-1927 has a CVSS 2.0 base score of 5.0, rated medium severity.

Is CVE-2006-1927 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (75th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2006-1927?

CVE-2006-1927 primarily affects Cisco Ios Xr. In total, 9 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2006-1927?

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

When was CVE-2006-1927 published?

CVE-2006-1927 was published on 2006-04-20 and last updated on 2026-06-16.

CVE-2006-1927

CVE-2006-1927 is a medium-severity vulnerability in Cisco Ios Xr 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.

Key facts

Severity: Medium (CVSS 2.0 base score 5.0)
EPSS exploit prediction: 2% (75th percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Cisco Ios Xr
Published: 2006-04-20
Last modified: 2026-06-16

Description

Cisco IOS XR, when configured for Multi Protocol Label Switching (MPLS) and running on Cisco CRS-1 or Cisco 12000 series routers, allows remote attackers to cause a denial of service (Line card crash) via certain MPLS packets, as identified by Cisco bug ID CSCsc77475.

Frequently asked questions

What is CVE-2006-1927?: Cisco IOS XR, when configured for Multi Protocol Label Switching (MPLS) and running on Cisco CRS-1 or Cisco 12000 series routers, allows remote attackers to cause a denial of service (Line card crash) via certain MPLS packets, as identified by Cisco bug ID CSCsc77475.
How severe is CVE-2006-1927?: CVE-2006-1927 has a CVSS 2.0 base score of 5.0, rated medium severity.
Is CVE-2006-1927 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (75th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2006-1927?: CVE-2006-1927 primarily affects Cisco Ios Xr. In total, 9 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2006-1927?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2006-1927 published?: CVE-2006-1927 was published on 2006-04-20 and last updated on 2026-06-16.

References

Affected products (9)

cpe:2.3:o:cisco:ios_xr:3.0.1:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xr:3.1.0:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xr:3.2:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xr:3.2.1:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xr:3.2.2:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xr:3.2.3:*:crs-1:*:*:*:*:*
cpe:2.3:o:cisco:ios_xr:3.2.3:*:prp:*:*:*:*:*
cpe:2.3:o:cisco:ios_xr:3.2.4:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xr:3.2.50:*:*:*:*:*:*:*

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