CVE-2011-4023· NVD / CVE Program· CNA cisco

Memory leak in libcmd in Cisco NX-OS 5.0 on Nexus switches allows remote authenticated users to cause a denial of service (memory consumptio

Memory leak in libcmd in Cisco NX-OS 5.0 on Nexus switches allows remote authenticated users to cause a denial of service (memory consumption) via SNMP requests, aka Bug ID CSCtr65682.

HighCVSS 7.8 · v2.0—No exploit No fix recorded

Published: May 3, 2012
Updated: Jun 16, 2026
EPSS: 1.3% · 70th percentile
CWE: CWE-399

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Action score

Monitor

Low priority for now.

CVSS: 31 / 40 · 7.8 / 10
CISA KEV: 0 / 30 · Not listed
EPSS: 0 / 30 · 1.3%

Affected systems

Vendor	Product	CPE
cisco	nx-os	cpe:2.3:o:cisco:nx-os
cisco	nexus 2148t fex switch	cpe:2.3:h:cisco:nexus_2148t_fex_switch
cisco	nexus 2224tp fex switch	cpe:2.3:h:cisco:nexus_2224tp_fex_switch
cisco	nexus 2232pp fex switch	cpe:2.3:h:cisco:nexus_2232pp_fex_switch
cisco	nexus 2232tm fex switch	cpe:2.3:h:cisco:nexus_2232tm_fex_switch
cisco	nexus 2248tp e fex switch	cpe:2.3:h:cisco:nexus_2248tp_e_fex_switch
cisco	nexus 2248tp fex switch	cpe:2.3:h:cisco:nexus_2248tp_fex_switch
cisco	nexus 5010p switch	cpe:2.3:h:cisco:nexus_5010p_switch
cisco	nexus 5020p switch	cpe:2.3:h:cisco:nexus_5020p_switch
cisco	nexus 5548p	cpe:2.3:h:cisco:nexus_5548p
cisco	nexus 5548up	cpe:2.3:h:cisco:nexus_5548up
cisco	nexus 5596up	cpe:2.3:h:cisco:nexus_5596up

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

cisco nexus 2148t fex switchall versions
cisco nexus 2224tp fex switchall versions
cisco nexus 2232pp fex switchall versions
cisco nexus 2232tm fex switchall versions
cisco nexus 2248tp e fex switchall versions
cisco nexus 2248tp fex switchall versions
cisco nexus 5010p switchall versions
cisco nexus 5020p switchall versions
cisco nexus 5548pall versions
cisco nexus 5548upall versions
cisco nexus 5596upall versions
cisco nx-os5.0
cisco nx-os5.0(2)
cisco nx-os5.0(2)n1(1)
cisco nx-os5.0(2)n2(1)
cisco nx-os5.0(2)n2(1a)
cisco nx-os5.0(2a)
cisco nx-os5.0(3)
cisco nx-os5.0(3)n1(1)
cisco nx-os5.0(3)n1(1a)

Same product

cisco: all records

Other highest-scoring records for the same primary product.

CVE-2024-20399Cisco NX-OS Software CLI Command Injection VulnerabilityKEV
57Plan
CVE-2018-0301A vulnerability in the NX-API feature of Cisco NX-OS Software could allow an unauthenticated, remote attacker to craft a packet to the manag
44Plan
CVE-2016-1453Buffer overflow in the Overlay Transport Virtualization (OTV) GRE feature in Cisco NX-OS 5.0 through 7.3 on Nexus 7000 and 7700 devices allo
41Plan
CVE-2018-0310A vulnerability in the Cisco Fabric Services component of Cisco FXOS Software and Cisco NX-OS Software could allow an unauthenticated, remot
40Plan
CVE-2022-20650Cisco NX-OS Software NX-API Command Injection Vulnerability
39Monitor
CVE-2016-1341Cisco NX-OS 7.0(1)N1(1), 7.0(1)N1(3), and 7.0(4)N1(1) on Nexus 2000 Fabric Extender devices has a blank root password, which allows local us
39Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

No fix version is recorded for this entry. Check the references for vendor advisories.

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

EPSS, last 120 days

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

No commit or PR link among the references.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

No credits in the CNA record.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

No nightly-computed relations.

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

—

Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

Technical details

Attack conditions

No special conditions are required; it is repeatable.

If successful

Confidentiality: none
Integrity: none
Availability: C · the service can be disrupted

Attack complexity: Low
Confidentiality impact: None
Integrity impact: None
Availability impact: C

Weakness class (CWE)

CWE-399 · Resource Management Errors

CVSS vector

AV:N/AC:L/Au:N/C:N/I:N/A:C

nvd-primary

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

MITRE has no CAPEC/ATT&CK mapping for this CWE.

Noroxi analysis

No Noroxi analysis for this record yet

We don't hand-write analysis for all 385,000+ vulnerabilities; that wouldn't be honest. For notable, high-impact vulnerabilities our team writes the mechanism, detection and remediation steps.

We use this product, ask for help

Change log

No changes recorded on tracked fields yet. Score, KEV, exploit maturity and fix status changes appear here.

References

www.cisco.com/en/US/docs/switches/datacenter/nexus5000/sw/release/notes/Rel_5_0_3_N2_1/Nexus5000_Release_Notes_5_0_3_N2.html

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records