How severe is CVE-2015-4273?

CVE-2015-4273 has a CVSS 2.0 base score of 5.0, rated medium severity.

Is CVE-2015-4273 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (78th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2015-4273?

CVE-2015-4273 primarily affects Cisco Asr 5000 Series Software. In total, 3 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2015-4273?

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

When was CVE-2015-4273 published?

CVE-2015-4273 was published on 2015-07-15 and last updated on 2026-06-17.

CVE-2015-4273

CVE-2015-4273 is a medium-severity vulnerability in Cisco Asr 5000 Series Software 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-20.

Key facts

Severity: Medium (CVSS 2.0 base score 5.0)
EPSS exploit prediction: 2% (78th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-20
Affected product: Cisco Asr 5000 Series Software
Published: 2015-07-15
Last modified: 2026-06-17

Description

The Packet Data Network Gateway (aka PGW) component on Cisco ASR 5000 devices with software 15.0(912), 15.0(935), and 15.0(938) allows remote attackers to cause a denial of service (Session Manager outage) via malformed fields in an IP packet, aka Bug ID CSCut38476.

Frequently asked questions

What is CVE-2015-4273?: The Packet Data Network Gateway (aka PGW) component on Cisco ASR 5000 devices with software 15.0(912), 15.0(935), and 15.0(938) allows remote attackers to cause a denial of service (Session Manager outage) via malformed fields in an IP packet, aka Bug ID CSCut38476.
How severe is CVE-2015-4273?: CVE-2015-4273 has a CVSS 2.0 base score of 5.0, rated medium severity.
Is CVE-2015-4273 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (78th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2015-4273?: CVE-2015-4273 primarily affects Cisco Asr 5000 Series Software. In total, 3 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2015-4273?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2015-4273 published?: CVE-2015-4273 was published on 2015-07-15 and last updated on 2026-06-17.

References

Affected products (3)

cpe:2.3:a:cisco:asr_5000_series_software:15.0\(912\):*:*:*:*:*:*:*
cpe:2.3:a:cisco:asr_5000_series_software:15.0\(935\):*:*:*:*:*:*:*
cpe:2.3:a:cisco:asr_5000_series_software:15.0\(938\):*:*:*:*:*:*:*

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