CVE-2021-1387 Details
Description
A vulnerability in the network stack of Cisco NX-OS Software could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected device. This vulnerability exists because the software improperly releases resources when it processes certain IPv6 packets that are destined to an affected device. An attacker could exploit this vulnerability by sending multiple crafted IPv6 packets to an affected device. A successful exploit could cause the network stack to run out of available buffers, impairing operations of control plane and management plane protocols and resulting in a DoS condition. Manual intervention would be required to restore normal operations on the affected device. For more information about the impact of this vulnerability, see the Details section of this advisory.
Metrics
CVSS 4.0 Severity and Vector Strings:
No CVSS 4.0 data is available for this CVE.
CVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
CISA-ADP
Assessed Nov 8, 2024References to Advisories, Solutions, and Tools
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Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-401 | Missing Release of Memory after Effective Lifetime | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| cisco unified computing system | >= 4.0, < 4.0\(4k\) >= 4.1, < 4.1\(1e\) |
CPE
Remediation
| |
| cisco ucs 64108 | All versions |
CPE
Remediation
| |
| cisco ucs 6454 | All versions |
CPE
Remediation
| |
| cisco nx-os | 7.0(0)n1(1) 7.0(1)n1(1) 7.0(2)n1(1) 7.0(3)n1(1) 7.0(4)n1(1) 7.0(4)n1(1a) 7.0(5)n1(1) 7.0(5)n1(1a) 7.0(6)n1(1) 7.0(6)n1(2s) 7.0(6)n1(3s) 7.0(6)n1(4s) 7.0(7)n1(1) 7.0(7)n1(1a) 7.0(7)n1(1b) 7.0(8)n1(1) 7.0(8)n1(1a) 7.1(0)n1(1) 7.1(0)n1(1a) 7.1(0)n1(1b) 7.1(1)n1(1) 7.1(1)n1(1a) 7.1(2)n1(1) 7.1(2)n1(1a) 7.1(3)n1(1) 7.1(3)n1(2) 7.1(3)n1(2a) 7.1(3)n1(3) 7.1(3)n1(4) 7.1(3)n1(5) 7.1(4)n1(1) 7.1(4)n1(1a) 7.1(4)n1(1c) 7.1(4)n1(1d) 7.1(5)n1(1) 7.1(5)n1(1b) 7.2(0)n1(1) 7.2(1)n1(1) 7.3(0)n1(1) 7.3(0)n1(1a) 7.3(0)n1(1b) 7.3(1)n1(1) 7.3(2)n1(1) 7.3(2)n1(1b) 7.3(2)n1(1c) 7.3(3)n1(1) 7.3(4)n1(1) 7.3(4)n1(1a) 7.3(5)n1(1) 7.3(6)n1(1) 7.3(6)n1(1a) 7.3(7)n1(1) 7.3(7)n1(1a) 7.3(7)n1(1b) 6.0(2)a3(1) 6.0(2)a3(2) 6.0(2)a3(4) 6.0(2)a4(1) 6.0(2)a4(2) 6.0(2)a4(3) 6.0(2)a4(4) 6.0(2)a4(5) 6.0(2)a4(6) 6.0(2)a6(1) 6.0(2)a6(1a) 6.0(2)a6(2) 6.0(2)a6(2a) 6.0(2)a6(3) 6.0(2)a6(3a) 6.0(2)a6(4) 6.0(2)a6(4a) 6.0(2)a6(5) 6.0(2)a6(5a) 6.0(2)a6(5b) 6.0(2)a6(6) 6.0(2)a6(7) 6.0(2)a6(8) 6.0(2)a7(1) 6.0(2)a7(1a) 6.0(2)a7(2) 6.0(2)a7(2a) 6.0(2)a8(1) 6.0(2)a8(2) 6.0(2)a8(3) 6.0(2)a8(4) 6.0(2)a8(4a) 6.0(2)a8(5) 6.0(2)a8(6) 6.0(2)a8(7) 6.0(2)a8(7a) 6.0(2)a8(7b) 6.0(2)a8(8) 6.0(2)a8(9) 6.0(2)a8(10) 6.0(2)a8(10a) 6.0(2)a8(11) 6.0(2)a8(11a) 6.0(2)a8(11b) 6.0(2)u2(1) 6.0(2)u2(2) 6.0(2)u2(3) 6.0(2)u2(4) 6.0(2)u2(5) 6.0(2)u2(6) 6.0(2)u3(1) 6.0(2)u3(2) 6.0(2)u3(3) 6.0(2)u3(4) 6.0(2)u3(5) 6.0(2)u3(6) 6.0(2)u3(7) 6.0(2)u3(8) 6.0(2)u3(9) 6.0(2)u4(1) 6.0(2)u4(2) 6.0(2)u4(3) 6.0(2)u4(4) 6.0(2)u5(1) 6.0(2)u5(2) 6.0(2)u5(3) 6.0(2)u5(4) 6.0(2)u6(1) 6.0(2)u6(1a) 6.0(2)u6(2) 6.0(2)u6(2a) 6.0(2)u6(3) 6.0(2)u6(3a) 6.0(2)u6(4) 6.0(2)u6(4a) 6.0(2)u6(5) 6.0(2)u6(5a) 6.0(2)u6(5b) 6.0(2)u6(5c) 6.0(2)u6(6) 6.0(2)u6(7) 6.0(2)u6(8) 6.0(2)u6(9) 6.0(2)u6(10) 6.0(2)u6(10a) 7.0(3)f3(1) 7.0(3)f3(2) 7.0(3)f3(3) 7.0(3)f3(3a) 7.0(3)f3(3c) 7.0(3)f3(4) 7.0(3)f3(5) 7.0(3)i2(1) 7.0(3)i2(1a) 7.0(3)i2(2) 7.0(3)i2(2a) 7.0(3)i2(2b) 7.0(3)i2(2c) 7.0(3)i2(2d) 7.0(3)i2(2e) 7.0(3)i2(2r) 7.0(3)i2(2s) 7.0(3)i2(2v) 7.0(3)i2(2w) 7.0(3)i2(2x) 7.0(3)i2(2y) 7.0(3)i2(3) 7.0(3)i2(4) 7.0(3)i2(5) 7.0(3)i3(1) 7.0(3)i4(1) 7.0(3)i4(1t) 7.0(3)i4(2) 7.0(3)i4(3) 7.0(3)i4(4) 7.0(3)i4(5) 7.0(3)i4(6) 7.0(3)i4(6t) 7.0(3)i4(7) 7.0(3)i4(8) 7.0(3)i4(8a) 7.0(3)i4(8b) 7.0(3)i4(8z) 7.0(3)i4(9) 7.0(3)i5(1) 7.0(3)i5(2) 7.0(3)i5(3) 7.0(3)i5(3a) 7.0(3)i5(3b) 7.0(3)i6(1) 7.0(3)i6(2) 7.0(3)i7(1) 7.0(3)i7(2) 7.0(3)i7(3) 7.0(3)i7(3z) 7.0(3)i7(4) 7.0(3)i7(5) 7.0(3)i7(5a) 7.0(3)i7(6) 7.0(3)i7(6z) 7.0(3)i7(7) 7.0(3)i7(8) 7.0(3)ic4(4) 7.0(3)im7(2) 7.2(0)d1(1) 7.2(1)d1(1) 7.2(2)d1(1) 7.2(2)d1(2) 7.2(2)d1(3) 7.2(2)d1(4) 7.3(0)d1(1) 7.3(0)dx(1) 7.3(1)d1(1) 7.3(2)d1(1) 7.3(2)d1(1d) 7.3(2)d1(2) 7.3(2)d1(3) 7.3(2)d1(3a) 7.3(3)d1(1) 7.3(4)d1(1) 7.3(5)d1(1) 7.3(6)d1(1) 8.0(1) 8.1(1) 8.1(2) 8.1(2a) 8.2(1) 8.2(2) 8.2(3) 8.2(4) 8.2(5) 8.3(1) 8.3(2) 8.4(1) 8.4(2) 7.0(3)f1(1) 7.0(3)f2(1) 7.0(3)f2(2) 7.0(3)ia7(1) 7.0(3)ia7(2) 7.0(3)im3(1) 7.0(3)im3(2) 7.0(3)im3(2a) 7.0(3)im3(2b) 7.0(3)im3(3) |
CPE
Remediation
| |
| cisco nexus 5548p | All versions |
CPE
Remediation
| |
| cisco nexus 5548up | All versions |
CPE
Remediation
| |
| cisco nexus 5596t | All versions |
CPE
Remediation
| |
| cisco nexus 5596up | All versions |
CPE
Remediation
| |
| cisco nexus 56128p | All versions |
CPE
Remediation
| |
| cisco nexus 5624q | All versions |
CPE
Remediation
| |
| cisco nexus 5648q | All versions |
CPE
Remediation
| |
| cisco nexus 5672up | All versions |
CPE
Remediation
| |
| cisco nexus 5672up-16g | All versions |
CPE
Remediation
| |
| cisco nexus 5696q | All versions |
CPE
Remediation
| |
| cisco nexus 3016 | All versions |
CPE
Remediation
| |
| cisco nexus 3016q | All versions |
CPE
Remediation
| |
| cisco nexus 3048 | All versions |
CPE
Remediation
| |
| cisco nexus 3064 | All versions |
CPE
Remediation
| |
| cisco nexus 3064-32t | All versions |
CPE
Remediation
| |
| cisco nexus 3064-t | All versions |
CPE
Remediation
| |
| cisco nexus 3064-x | All versions |
CPE
Remediation
| |
| cisco nexus 3064t | All versions |
CPE
Remediation
| |
| cisco nexus 3064x | All versions |
CPE
Remediation
| |
| cisco nexus 3100-v | All versions |
CPE
Remediation
| |
| cisco nexus 3100-z | All versions |
CPE
Remediation
| |
| cisco nexus 3100v | All versions |
CPE
Remediation
| |
| cisco nexus 31108pc-v | All versions |
CPE
Remediation
| |
| cisco nexus 31108pv-v | All versions |
CPE
Remediation
| |
| cisco nexus 31108tc-v | All versions |
CPE
Remediation
| |
| cisco nexus 31128pq | All versions |
CPE
Remediation
| |
| cisco nexus 3132c-z | All versions |
CPE
Remediation
| |
| cisco nexus 3132q | All versions |
CPE
Remediation
| |
| cisco nexus 3132q-v | All versions |
CPE
Remediation
| |
| cisco nexus 3132q-x | All versions |
CPE
Remediation
| |
| cisco nexus 3132q-xl | All versions |
CPE
Remediation
| |
| cisco nexus 3164q | All versions |
CPE
Remediation
| |
| cisco nexus 3172 | All versions |
CPE
Remediation
| |
| cisco nexus 3172pq | All versions |
CPE
Remediation
| |
| cisco nexus 3172pq-xl | All versions |
CPE
Remediation
| |
| cisco nexus 3172tq | All versions |
CPE
Remediation
| |
| cisco nexus 3172tq-32t | All versions |
CPE
Remediation
| |
| cisco nexus 3172tq-xl | All versions |
CPE
Remediation
| |
| cisco nexus 3232c | All versions |
CPE
Remediation
| |
| cisco nexus 3264c-e | All versions |
CPE
Remediation
| |
| cisco nexus 3264q | All versions |
CPE
Remediation
| |
| cisco nexus 3408-s | All versions |
CPE
Remediation
| |
| cisco nexus 34180yc | All versions |
CPE
Remediation
| |
| cisco nexus 34200yc-sm | All versions |
CPE
Remediation
| |
| cisco nexus 3432d-s | All versions |
CPE
Remediation
| |
| cisco nexus 3464c | All versions |
CPE
Remediation
| |
| cisco nexus 3524 | All versions |
CPE
Remediation
| |
| cisco nexus 3524-x | All versions |
CPE
Remediation
| |
| cisco nexus 3524-xl | All versions |
CPE
Remediation
| |
| cisco nexus 3548 | All versions |
CPE
Remediation
| |
| cisco nexus 3548-x | All versions |
CPE
Remediation
| |
| cisco nexus 3548-xl | All versions |
CPE
Remediation
| |
| cisco nexus 36180yc-r | All versions |
CPE
Remediation
| |
| cisco nexus 3636c-r | All versions |
CPE
Remediation
| |
| cisco nexus 6001 | All versions |
CPE
Remediation
| |
| cisco nexus 6001p | All versions |
CPE
Remediation
| |
| cisco nexus 6001t | All versions |
CPE
Remediation
| |
| cisco nexus 6004 | All versions |
CPE
Remediation
| |
| cisco nexus 6004x | All versions |
CPE
Remediation
| |
| cisco nexus 7000 | All versions |
CPE
Remediation
| |
| cisco nexus 7004 | All versions |
CPE
Remediation
| |
| cisco nexus 7009 | All versions |
CPE
Remediation
| |
| cisco nexus 7010 | All versions |
CPE
Remediation
| |
| cisco nexus 7018 | All versions |
CPE
Remediation
| |
| cisco nexus 7700 | All versions |
CPE
Remediation
| |
| cisco nexus 7702 | All versions |
CPE
Remediation
| |
| cisco nexus 7706 | All versions |
CPE
Remediation
| |
| cisco nexus 7710 | All versions |
CPE
Remediation
| |
| cisco nexus 7718 | All versions |
CPE
Remediation
| |
| cisco nexus 9000v | All versions |
CPE
Remediation
| |
| cisco nexus 92160yc-x | All versions |
CPE
Remediation
| |
| cisco nexus 92160yc switch | All versions |
CPE
Remediation
| |
| cisco nexus 9221c | All versions |
CPE
Remediation
| |
| cisco nexus 92300yc | All versions |
CPE
Remediation
| |
| cisco nexus 92304qc | All versions |
CPE
Remediation
| |
| cisco nexus 92348gc-x | All versions |
CPE
Remediation
| |
| cisco nexus 9236c | All versions |
CPE
Remediation
| |
| cisco nexus 9272q | All versions |
CPE
Remediation
| |
| cisco nexus 93108tc-ex | All versions |
CPE
Remediation
| |
| cisco nexus 93108tc-ex-24 | All versions |
CPE
Remediation
| |
| cisco nexus 93108tc-fx | All versions |
CPE
Remediation
| |
| cisco nexus 93108tc-fx-24 | All versions |
CPE
Remediation
| |
| cisco nexus 93108tc-fx3p | All versions |
CPE
Remediation
| |
| cisco nexus 93120tx | All versions |
CPE
Remediation
| |
| cisco nexus 93128 | All versions |
CPE
Remediation
| |
| cisco nexus 93128tx | All versions |
CPE
Remediation
| |
| cisco nexus 9316d-gx | All versions |
CPE
Remediation
| |
| cisco nexus 93180lc-ex | All versions |
CPE
Remediation
| |
| cisco nexus 93180tc-ex | All versions |
CPE
Remediation
| |
| cisco nexus 93180yc-ex | All versions |
CPE
Remediation
| |
| cisco nexus 93180yc-ex-24 | All versions |
CPE
Remediation
| |
| cisco nexus 93180yc-fx | All versions |
CPE
Remediation
| |
| cisco nexus 93180yc-fx-24 | All versions |
CPE
Remediation
| |
| cisco nexus 93180yc-fx3 | All versions |
CPE
Remediation
| |
| cisco nexus 93180yc-fx3s | All versions |
CPE
Remediation
| |
| cisco nexus 93216tc-fx2 | All versions |
CPE
Remediation
| |
| cisco nexus 93240yc-fx2 | All versions |
CPE
Remediation
| |
| cisco nexus 9332c | All versions |
CPE
Remediation
| |
| cisco nexus 9332pq | All versions |
CPE
Remediation
| |
| cisco nexus 93360yc-fx2 | All versions |
CPE
Remediation
| |
| cisco nexus 9336c-fx2 | All versions |
CPE
Remediation
| |
| cisco nexus 9336c-fx2-e | All versions |
CPE
Remediation
| |
| cisco nexus 9336pq | All versions |
CPE
Remediation
| |
| cisco nexus 9348gc-fxp | All versions |
CPE
Remediation
| |
| cisco nexus 93600cd-gx | All versions |
CPE
Remediation
| |
| cisco nexus 9364c | All versions |
CPE
Remediation
| |
| cisco nexus 9364c-gx | All versions |
CPE
Remediation
| |
| cisco nexus 9372px | All versions |
CPE
Remediation
| |
| cisco nexus 9372px-e | All versions |
CPE
Remediation
| |
| cisco nexus 9372tx | All versions |
CPE
Remediation
| |
| cisco nexus 9372tx-e | All versions |
CPE
Remediation
| |
| cisco nexus 9396px | All versions |
CPE
Remediation
| |
| cisco nexus 9396tx | All versions |
CPE
Remediation
| |
| cisco nexus 9500r | All versions |
CPE
Remediation
| |
| cisco nexus 9504 | All versions |
CPE
Remediation
| |
| cisco nexus 9508 | All versions |
CPE
Remediation
| |
| cisco nexus 9516 | All versions |
CPE
Remediation
| |
Change History
7 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jun 17, 2026 | CVE Modified | CISA-ADP |
| Jun 17, 2026 | CVE Modified | [email protected] |
| Nov 21, 2024 | CVE Modified | CVE |
| May 14, 2024 | CVE Modified | [email protected] |
| Nov 7, 2023 | CVE Modified | [email protected] |
| Jul 15, 2022 | Reanalysis | [email protected] |
| Mar 3, 2021 | Initial Analysis | [email protected] |