CVE-2026-20308
CVE CVE-2026-20308EUVD EUVD-2026-53461Published 2026-08-05T16:19:49.000ZLast changed 2026-08-05T17:45:13.000ZCVSS 4.3
What the advisory describes
A vulnerability in the web-based management interface of Cisco IOS XE Software could allow an authenticated, remote attacker with low privileges to perform a denial of service (DoS) attack against an affected device. This vulnerability is due to insufficient input validation. An attacker could exploit this vulnerability by sending crafted input to the web-based management interface of an affected device. A successful exploit could allow the attacker to cause the web-based management interface to become unresponsive.
Source: EUVD (ENISA), in the words of the advisory.
Products the advisory names
These come from the advisory itself, not from any check we performed.
- Cisco — Cisco IOS XE Software 16.12.4; 17.6.8a; 17.15.3a; 17.9.1x1; 17.17.1; 16.9.4c; 17.12.5b; 17.9.7; 17.14.1a; 17.6.1a; 17.12.7a; 17.9.5d; 16.9.1; 17.5.1a; 16.12.9; 17.9.9; 17.14.1; 17.12.1z4; 16.9.1d; 16.12.10a; 17.6.3; 16.10.1g; 17.9.3; 16.12.1t; 16.11.1s; 16.12.2a; 16.10.1e; 16.12.3a; 16.10.1s; 17.15.2a; 16.12.14; 17.3.1z; 16.12.10; 16.9.3h; 17.3.1; 16.12.16; 17.7.2; 16.12.2t; 17.3.3; 17.6.6a; 16.9.6; 17.3.1a; 16.11.1; 17.1.1t; 17.3.1x; 17.12.1y; 16.12.7; 17.12.1; 17.2.1r; 16.12.2s; 16.12.2; 17.13.1a; 16.12.12; 17.15.4s1; 17.12.5c; 16.9.2; 17.3.4; 17.6.1x; 16.10.1d; 17.18.3; 17.15.2c; 17.9.1w; 17.15.1b; 17.15.4a; 16.9.1a; 17.7.1; 17.12.2a; 17.12.3a; 17.9.1y1; 17.9.1x; 17.4.1b; 17.12.1z1; 16.10.1f; 17.12.1z2; 17.11.1a; 16.12.8; 17.18.1w; 17.6.4; 17.12.4a; 17.13.1; 16.12.5; 17.2.3; 17.15.3b; 17.16.1; 16.11.1c; 17.4.1; 16.9.1c; 17.18.1; 17.3.8a; 17.12.1z; 17.4.1a; 17.15.3; 17.2.1v; 17.9.5; 16.10.2; 17.3.6; 16.9.1s; 17.7.1b; 17.3.7; 16.9.5f; 17.12.6b; 17.4.2; 16.9.1b; 17.12.1a; 17.12.5a; 17.3.2a; 17.12.6a; 17.3.5; 17.9.2a; 16.9.7; 17.9.4a; 17.12.7; 16.10.1b; 17.9.4; 17.4.1c; 17.3.8; 17.6.7; 17.15.1w; 17.18.3a; 17.15.4d; 17.2.1; 17.4.2a; 17.9.3a; 17.15.1; 17.3.3a; 17.9.5f; 17.3.4c; 17.1.3; 16.12.1s; 17.6.3a; 17.9.7b; 17.7.1a; 16.12.1a; 17.12.7b; 17.11.1; 17.6.5a; 17.10.1b; 16.9.8; 17.6.5; 16.12.1c; 16.9.8b; 16.12.6; 16.12.1z1; 17.9.5c; 16.12.3; 16.9.3a; 26.1.1a; 16.12.5b; 17.2.2; 17.15.5a; 17.12.1z5; 16.12.5a; 17.15.2b; 17.12.1z3; 17.3.4b; 17.10.1; 17.12.2; 17.10.1a; 17.6.1; 17.15.1a; 17.3.2; 16.12.1z; 17.3.1w; 16.9.2s; 17.9.5e; 17.15.4b; 17.15.4; 16.12.13; 17.18.1z; 17.9.1a; 16.10.1c; 17.9.6; 17.1.1; 26.1.1; 17.12.1z6; 17.18.2; 17.12.1x; 17.12.1w; 17.16.1a; 17.18.1x; 17.9.1; 17.12.5; 16.12.3s; 16.12.1x; 26.2.1ea; 17.12.4b; 16.11.1a; 17.6.8; 16.12.1y; 16.9.8a; 17.8.1; 16.12.6a; 16.11.2; 17.8.1a; 17.18.1a; 16.9.3; 17.2.1a; 17.15.4c; 17.9.1y; 17.9.5b; 16.10.1a; 17.6.6; 16.12.1; 16.12.1z2; 17.5.1; 17.9.5a; 17.18.1y; 17.12.5d; 16.10.1; 16.12.4a; 16.9.3s; 17.12.4; 16.12.1w; 16.12.15; 16.12.11; 17.12.6; 17.15.1y; 17.1.1s; 17.9.2; 17.3.5b; 17.6.1z1; 17.9.8; 17.3.5a; 16.9.5; 17.3.4a; 16.10.3; 17.1.1a; 17.9.6a; 17.6.2; 17.6.1z; 17.15.5; 16.9.4; 16.11.1b; 17.12.3; 17.15.1x; 17.9.7a; 17.1.2; 17.15.2; 16.9.2a
The versions shown are the advisory's own. Patchlage compares no version numbers and derives no judgement from them — which version is installed is something a person has to look up.
Carried in the product catalogue
An estate covering these products can be recorded in Patchlage. An advisory about them appears in the next morning's situation report.
- Cisco — IOS XE Software
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