How severe is CVE-2012-5723?

CVE-2012-5723 has a CVSS 2.0 base score of 6.1, rated medium severity.

Is CVE-2012-5723 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (49th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2012-5723?

CVE-2012-5723 primarily affects Cisco Ios Xe. In total, 19 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2012-5723?

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

When was CVE-2012-5723 published?

CVE-2012-5723 was published on 2014-04-24 and last updated on 2026-06-16.

CVE-2012-5723

CVE-2012-5723 is a medium-severity vulnerability in Cisco Ios Xe with a CVSS 2.0 base score of 6.1. 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 6.1)
EPSS exploit prediction: 1% (49th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-20
Affected product: Cisco Ios Xe
Published: 2014-04-24
Last modified: 2026-06-16

Description

Cisco ASR 1000 devices with software before 3.8S, when BDI routing is enabled, allow remote attackers to cause a denial of service (device reload) via crafted (1) broadcast or (2) multicast ICMP packets with fragmentation, aka Bug ID CSCub55948.

Frequently asked questions

What is CVE-2012-5723?: Cisco ASR 1000 devices with software before 3.8S, when BDI routing is enabled, allow remote attackers to cause a denial of service (device reload) via crafted (1) broadcast or (2) multicast ICMP packets with fragmentation, aka Bug ID CSCub55948.
How severe is CVE-2012-5723?: CVE-2012-5723 has a CVSS 2.0 base score of 6.1, rated medium severity.
Is CVE-2012-5723 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (49th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2012-5723?: CVE-2012-5723 primarily affects Cisco Ios Xe. In total, 19 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2012-5723?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2012-5723 published?: CVE-2012-5723 was published on 2014-04-24 and last updated on 2026-06-16.

References

http://www.cisco.com/c/en/us/td/docs/routers/asr1000/release/notes/asr1k_rn_rel_notes/asr1k_caveats_38s.html

Affected products (19)

cpe:2.3:o:cisco:ios_xe:*:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xe:3.6.0s:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xe:3.6.1s:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xe:3.6.2s:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xe:3.6s\(.0\):*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xe:3.6s\(.1\):*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xe:3.6s\(.2\):*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xe:3.7.0s:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xe:3.7.1s:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xe:3.7.2s:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xe:3.7s\(.0\):*:*:*:*:*:*:*
cpe:2.3:h:cisco:asr_1001:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:asr_1002:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:asr_1002-x:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:asr_1002_fixed_router:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:asr_1004:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:asr_1006:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:asr_1013:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:asr_1023_router:-:*:*:*:*:*:*:*

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