https://vulnerability.circl.lu/rss/recent/all/10 Most recent entries from all 2026-10-08T21:00:05.731190+00:00 Vulnerability-Lookup info@circl.lu python-feedgen Contains only the most 10 recent entries. https://vulnerability.circl.lu/vuln/CERTA-2013-AVI-544 CERTA-2013-AVI-544 — De multiples vulnérabilités ont été corrigées dans <span class="textit">Cisco IOS</span>. Elles permettent à un attaqua… 2026-10-08T21:00:05.895022+00:00 CERTA-2013-AVI-544 https://vulnerability.circl.lu/vuln/fkie_cve-2013-5479 fkie_cve-2013-5479 2026-10-08T21:00:05.895111+00:00

The DNS-over-TCP implementation in Cisco IOS 12.2 and 15.0 through 15.3, when NAT is used, allows remote attackers to cause a denial of service (device reload) via a crafted IPv4 DNS TCP stream, aka Bug ID CSCtn53730.

 https://vulnerability.circl.lu/vuln/ghsa-gqwp-6ggw-g8ph GHSA-gqwp-6ggw-g8ph 2026-10-08T21:00:05.895174+00:00

The DNS-over-TCP implementation in Cisco IOS 12.2 and 15.0 through 15.3, when NAT is used, allows remote attackers to cause a denial of service (device reload) via a crafted IPv4 DNS TCP stream, aka Bug ID CSCtn53730.

 https://vulnerability.circl.lu/vuln/gsd-2013-5479 gsd-2013-5479 2026-10-08T21:00:05.895205+00:00 gsd-2013-5479 https://vulnerability.circl.lu/vuln/var-201309-0447 VAR-201309-0447 2026-10-08T21:00:05.895227+00:00

The DNS-over-TCP implementation in Cisco IOS 12.2 and 15.0 through 15.3, when NAT is used, allows remote attackers to cause a denial of service (device reload) via a crafted IPv4 DNS TCP stream, aka Bug ID CSCtn53730. Cisco IOS is the interconnected network operating system used on most Cisco system routers and network switches. A security vulnerability exists in Cisco IOS Software that unauthenticated remote attackers can exploit vulnerabilities to overload devices. The vulnerability is caused by improper processing of DNS packets that need to be translated through the NAT boundary. The attacker uses the vulnerability to continuously send certain DNS packets to the target device. When a malicious packet is processed, a bus error can cause the device to reset. Denial of service attack. The following devices are affected by this vulnerability: Cisco IOS 15.1M 15.1(4)M, 15.1(4)M0a, 15.1(4)M0b, 15.1(4)M1, 15.1(4)M2 | 15.1T 15.1(3)T, 15.1( 3) T1, 15.1(3)T2 | 15.1XB 15.1(4)XB4, 15.1(4)XB5, 15.1(4)XB5a, 15.1(4)XB6 | 15.2GC 15.2(1)GC, 15.2(1)GC1, 15.2(1)GC2 | 15.2T 15.2(1)T, 15.2(1)T1, 15.2(1)T2, 15.2(1)T3, 15.2(1)T3a, 15.2(1)T4. Exploiting this issue may allow remote attackers to trigger denial-of-service conditions. This issue is being tracked by Cisco Bug ID CSCtn53730