Cisco hit by max severity zero-day exploit targeting Identity Services
Engine, so it's time to patch up

Date:
Thu, 17 Sep 2026 14:05:00 +0000

Description:
Both Cisco and CISA are warning about in-the-wild abuse.

FULL STORY ======================================================================Copy link Facebook X Whatsapp Reddit Pinterest Flipboard Threads Email Share this article 0 Join the conversation Follow us Add us as a preferred source on Google Newsletter Subscribe to our newsletter Cisco fixed critical ISE flaw (CVE202676460) allowing unauthenticated API authentication bypass Actively exploited; no workarounds existpatching is the only mitigation, per Cisco PSIRT CISA added to KEV catalog, mandating federal agencies patch or disable ISE by Sept 19, 2026 Cisco has fixed a maximum-severity vulnerability found
in its Identity Services Engine (ISE) that is being actively exploited in attacks.

ISE is the companys Network Access Control (NAC) and identity-based policy platform which decides who or what is allowed onto a companys network, and what theyre allowed to access inside. A vulnerability in an API of Cisco Identity Services Engine (ISE) could allow an unauthenticated, remote
attacker to bypass authentication, the company said in a security advisory. Latest Videos From TechRadar Watch full video here: Abused in the wild This vulnerability is due to insufficient authentication control on an API endpoint. An attacker could exploit this vulnerability by sending a crafted request to an affected API endpoint. A successful exploit could allow the attacker to gain unauthorized access to the affected device by bypassing the web-based management interface.

The bug in question is tracked as CVE-2026-76460. It was given a severity score of 10/10 (critical), and was said it affects Cisco ISE and Cisco ISE Passive Identity Connector (ISE-PIC), regardless of device configuration. You may like CISA warns hackers are exploiting max severity GitLab flaw urges
all businesses to patch immediately Cisco patches three critical vulnerabilities as part of 'comprehensive internal security review' Microsoft's nemesis returns: Nightmare Eclipse is back with a new zero day

In the same advisory, Cisco said its Product Security Incident Response Team (PSIRT) was aware of active exploitation and urged customers to upgrade to a fixed software release as soon as possible. There are no workarounds
available for this flaw, and a patch is the only solution. The full list of vulnerable versions and the corresponding patches can be found on this link .

At the same time, the US Cybersecurity and Infrastructure Security Agency (CISA) added the bug to its Known Exploited Vulnerabilities (KEV) catalog, giving Federal agencies a three-day deadline to patch, or stop using ISE entirely. The deadline expires on September 19, 2026. Are you a pro?
Subscribe to our newsletter Sign up to the TechRadar Pro newsletter to get
all the top news, opinion, features and guidance your business needs to succeed! Contact me with news and offers from other Future brands Receive email from us on behalf of our trusted partners or sponsors By submitting
your information you agree to the Terms & Conditions and Privacy Policy and are aged 16 or over.

Cisco has shared Indicators of Compromise (IoC) and advised defenders to hunt for suspicious usernames in access.log files on every node. It also recommended re-imaging nodes and restoring them from backups, in case of a breach.

Via BleepingComputer The best antivirus for all budgets Our top picks, based on real-world testing and comparisons

Read our full guide to the best antivirus 1. Best overall: Bitdefender Total Security 2. Best for families: Norton 360 with LifeLock 3. Best for mobile: McAfee Mobile Security Follow TechRadar on Google News and add us as a preferred source to get our expert news, reviews, and opinion in your feeds.



======================================================================
Link to news story: https://www.techradar.com/pro/security/cisco-hit-by-max-severity-zero-day-expl oit-targeting-identity-services-engine-so-its-time-to-patch-up


--- Mystic BBS v1.12 A49 (Linux/64)
* Origin: tqwNet Technology News (1337:1/100)