8.6

CVE-2024-20267: cisco cisco nx-os software Classic Buffer Overflow

CVSS: 8.6v3.1HighModified
Published 28-02-2024Last modified 28-08-2024
Open JSON

Vulnerability summary

CVE-2024-20267 is a high (CVSS 8.6) Classic Buffer Overflow vulnerability in cisco cisco nx-os software. EPSS estimates a 0.93% chance of exploitation in the next 30 days, higher than 59.7% of scored vulnerabilities.

Overall risk
35/100
0100
Medium · default modelHow is this calculated?
CVSS score
8.6/10
010
High · v3.1 (CVE.org)
EPSS score
0.93%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Timeline

  1. 28-02-2024
    PublishedVulnerability first disclosed.
  2. 28-08-2024
    Last modifiedVulnerability information updated.

Description

A vulnerability with the handling of MPLS traffic for Cisco NX-OS Software could allow an unauthenticated, remote attacker to cause the netstack process to unexpectedly restart, which could cause the device to stop processing network traffic or to reload. This vulnerability is due to lack of proper error checking when processing an ingress MPLS frame. An attacker could exploit this vulnerability by sending a crafted IPv6 packet that is encapsulated within an MPLS frame to an MPLS-enabled interface of the targeted device. A successful exploit could allow the attacker to cause a denial of service (DoS) condition. Note: The IPv6 packet can be generated multiple hops away from the targeted device and then encapsulated within MPLS. The DoS condition may occur when the NX-OS device processes the packet.

CVSS metrics

2 scores · 2 sources · 1 version

EPSS trend

Probability

0.93%

Chance of exploitation in the next 30 days

Percentile

60%

Versus all other CVEs

30-day change

0.00 pp

From 0.93% on 18-09-2026

18-09-202618-10-2026
EPSS score
0.93%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Cisco2 products
  • cisco nx-os software6.0(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(10a) | 6.0(2)A8(10) | 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(2) | 6.0(2)U6(3) | 6.0(2)U6(4) | 6.0(2)U6(5) | 6.0(2)U6(6) | 6.0(2)U6(7) | 6.0(2)U6(8) | 6.0(2)U6(1a) | 6.0(2)U6(2a) | 6.0(2)U6(3a) | 6.0(2)U6(4a) | 6.0(2)U6(5a) | 6.0(2)U6(5b) | 6.0(2)U6(5c) | 6.0(2)U6(9) | 6.0(2)U6(10) | 6.2(2) | 6.2(2a) | 6.2(6) | 6.2(6b) | 6.2(8) | 6.2(8a) | 6.2(8b) | 6.2(10) | 6.2(12) | 6.2(18) | 6.2(16) | 6.2(14) | 6.2(6a) | 6.2(20) | 6.2(20a) | 6.2(22) | 6.2(24) | 6.2(24a) | 7.0(3)F1(1) | 7.0(3)F2(1) | 7.0(3)F2(2) | 7.0(3)F3(1) | 7.0(3)F3(2) | 7.0(3)F3(3) | 7.0(3)F3(3a) | 7.0(3)F3(4) | 7.0(3)F3(3c) | 7.0(3)F3(5) | 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(3) | 7.0(3)I2(4) | 7.0(3)I2(5) | 7.0(3)I2(1) | 7.0(3)I2(1a) | 7.0(3)I2(2) | 7.0(3)I3(1) | 7.0(3)I4(1) | 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(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)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(4) | 7.0(3)I7(5) | 7.0(3)I7(5a) | 7.0(3)I7(6) | 7.0(3)I7(7) | 7.0(3)I7(8) | 7.0(3)I7(9) | 7.0(3)I7(10) | 7.1(0)N1(1a) | 7.1(0)N1(1b) | 7.1(0)N1(1) | 7.1(1)N1(1) | 7.1(2)N1(1) | 7.1(3)N1(1) | 7.1(3)N1(2) | 7.1(4)N1(1) | 7.1(5)N1(1) | 7.1(5)N1(1b) | 7.2(0)D1(1) | 7.2(1)D1(1) | 7.2(2)D1(2) | 7.2(2)D1(1) | 7.3(0)D1(1) | 7.3(0)DX(1) | 7.3(0)N1(1) | 9.2(1) | 9.2(2) | 9.2(2t) | 9.2(3) | 9.2(4) | 9.2(2v) | 9.3(1) | 9.3(2) | 9.3(3) | 9.3(4) | 9.3(5) | 9.3(6) | 9.3(7) | 9.3(7a) | 9.3(8) | 9.3(9) | 9.3(10) | 9.3(11) | 9.3(12) | 10.1(1) | 10.1(2) | 10.1(2t) | 10.2(1) | 10.2(1q) | 10.2(2) | 10.2(3) | 10.2(3t) | 10.2(4) | 10.2(5) | 10.2(3v) | 10.2(6) | 10.3(1) | 10.3(2) | 10.3(3) | 10.3(99w) | 10.3(99x) | 10.4(1)
  • nx-os6.0\(2\)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\(10\) | 6.2\(2\) | 6.2\(2a\) | 6.2\(6\) | 6.2\(6a\) | 6.2\(6b\) | 6.2\(8\) | 6.2\(8a\) | 6.2\(8b\) | 6.2\(10\) | 6.2\(12\) | 6.2\(14\) | 6.2\(16\) | 6.2\(18\) | 6.2\(20\) | 6.2\(20a\) | 6.2\(22\) | 6.2\(24\) | 6.2\(24a\) | 7.0\(3\)f1\(1\) | 7.0\(3\)f2\(1\) | 7.0\(3\)f2\(2\) | 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\(3\) | 7.0\(3\)i2\(4\) | 7.0\(3\)i2\(5\) | 7.0\(3\)i3\(1\) | 7.0\(3\)i4\(1\) | 7.0\(3\)i4\(2\) | 7.0\(3\)i4\(3\) | 7.0\(3\)i4\(4\) | 7.0\(3\)i4\(5\) | 7.0\(3\)i4\(6\) | 7.0\(3\)i4\(7\) | 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\(3\)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\(4\) | 7.0\(3\)i7\(5\) | 7.0\(3\)i7\(5a\) | 7.0\(3\)i7\(6\) | 7.0\(3\)i7\(7\) | 7.0\(3\)i7\(8\) | 7.0\(3\)i7\(9\) | 7.0\(3\)i7\(10\) | 7.1\(0\)n1\(1\) | 7.1\(0\)n1\(1a\) | 7.1\(0\)n1\(1b\) | 7.1\(1\)n1\(1\) | 7.1\(2\)n1\(1\) | 7.1\(3\)n1\(1\) | 7.1\(3\)n1\(2\) | 7.1\(4\)n1\(1\) | 7.1\(5\)n1\(1\) | 7.1\(5\)n1\(1b\) | 7.2\(0\)d1\(1\) | 7.2\(1\)d1\(1\) | 7.2\(2\)d1\(1\) | 7.2\(2\)d1\(2\) | 7.3\(0\)d1\(1\) | 7.3\(0\)dx\(1\) | 7.3\(0\)n1\(1\) | 9.2\(1\) | 9.2\(2\) | 9.2\(2t\) | 9.2\(2v\) | 9.2\(3\) | 9.2\(4\) | 9.3\(1\) | 9.3\(2\) | 9.3\(3\) | 9.3\(4\) | 9.3\(5\) | 9.3\(6\) | 9.3\(7\) | 9.3\(7a\) | 9.3\(8\) | 9.3\(9\) | 9.3\(10\) | 9.3\(11\) | 9.3\(12\) | 10.1\(1\) | 10.1\(2\) | 10.1\(2t\) | 10.2\(1\) | 10.2\(1q\) | 10.2\(2\) | 10.2\(3\) | 10.2\(3t\) | 10.2\(3v\) | 10.2\(4\) | 10.2\(5\) | 10.2\(6\) | 10.3\(1\) | 10.3\(2\) | 10.3\(3\) | 10.3\(99w\) | 10.3\(99x\) | 10.4\(1\)

1 vendor · 2 products

References

1 links