VulnerabilityPublished 16 Sep 2026

CVE-2026-20247: Cisco Identity Services Engine Software · SQL Injection

Affects Cisco Identity Services Engine SoftwareSource CVE Database V5

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Not known to be exploited · CVSS 7.5 High.

Data as of 31 Oct 2026, 08:20 UTC

CVSS 3.1 base score

7.5High

How severe the flaw is on the 0–10 CVSS scale.

EPSS: 0.4% chance of exploitation in 30 days – higher than 39% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

Attack Vector: Network
Attack Complexity: Low
Privileges Required: None
User Interaction: None
Scope: Unchanged
Confidentiality: None
Integrity: High
Availability: None

Bold values are the worst case: easiest to exploit or largest impact.

Attack Vector: Network: The vulnerable component is bound to the network stack and the set of possible attackers extends beyond the other options listed, up to and including the entire Internet. Such a vulnerability is often termed 'remotely exploitable' and can be thought of as an attack being exploitable at the protocol level one or more network hops away (e.g., across one or more routers).
Attack Complexity: Low: Specialized access conditions or extenuating circumstances do not exist. An attacker can expect repeatable success against the vulnerable component.
Privileges Required: None: The attacker is unauthorized prior to attack, and therefore does not require any access to settings or files to carry out an attack.
User Interaction: None: The vulnerable system can be exploited without any interaction from any user.
Scope: Unchanged: An exploited vulnerability can only affect resources managed by the same security authority. In this case, the vulnerable component and the impacted component are either the same, or both are managed by the same security authority.
Confidentiality: None: There is no loss of confidentiality within the impacted component.
Integrity: High: There is a total loss of integrity, or a complete loss of protection. For example, the attacker is able to modify any/all files protected by the impacted component. Alternatively, only some files can be modified, but malicious modification would present a direct, serious consequence to the impacted component.
Availability: None: There is no impact to availability within the impacted component.

Definitions: FIRST CVSS v3.1 specification.

Exploitation evidence

Disclosed: evidence found.
CVE published 16 Sep 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 30 Oct 2026.

Disclosed: The CVE record is public on cve.org. Its publication is t = 0.
Detectable: A public nuclei template can find exposed instances, for defenders and attackers alike.
Weaponized: A Metasploit exploit module or Exploit-DB entry exists (Metasploit scanner modules do not count), or CISA SSVC or the CVSS exploit maturity reports a public proof of concept.
Exploited in the wild: CISA KEV lists it, CISA SSVC rates exploitation active, or a source reports attacks.
Observed by OffSeq Mirage: OffSeq Mirage honeypot sensors recorded attack traffic for this CVE, or found exposed hosts without attack traffic.

Moments are spaced evenly, not to scale; a dashed line marks a gap of six months or more. Deltas count from t = 0. Sources that give only a date (CISA KEV, Exploit-DB, or a time of exactly 00:00Z) read “same day” rather than hours. Metasploit modules carry the flaw’s disclosure date, not their release date, and nuclei templates carry no date, so both appear above but not on the timeline.

What to do

Affected software

Product	Affected	Fixed in
CiscoCisco Identity Services Engine Software	Affected 3.1.0 – 3.5.0 5 affected builds	Fixed in–

AI-suggested

Until an official fix is available, restrict network access to Cisco ISE management interfaces and monitor for unusual requests that could indicate exploitation attempts.

Description

CVE-2026-20247 is a high-severity SQL injection vulnerability in Cisco Identity Services Engine (ISE) Software. It allows an unauthenticated remote attacker to send crafted requests that exploit improper validation of user input, potentially modifying data in the device's underlying database. The affected versions are 3.1.0, 3.2.0, 3.3.0, 3.4.0, and 3.5.0. No known exploits are reported in the wild. The vulnerability has a CVSS score of 7.5, indicating a significant risk due to its ability to impact data integrity without requiring user interaction or privileges.

Impact

Successful exploitation allows an unauthenticated remote attacker to modify data in the underlying database of Cisco ISE, potentially compromising the integrity of critical configuration or operational data. There is no direct confidentiality or availability impact reported. No known exploits are currently active in the wild.

Summary

This vulnerability in Cisco ISE arises from improper neutralization of special elements in SQL commands, enabling SQL injection attacks. An unauthenticated attacker can exploit this by sending specially crafted requests to the affected device, leading to unauthorized modification of database data. The flaw affects specific versions of Cisco ISE software (3.1.0 through 3.5.0). The CVSS 3.1 vector indicates network attack vector, low attack complexity, no privileges required, no user interaction, unchanged scope, no confidentiality impact, high integrity impact, and no availability impact.

References

sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ise-sql-inj-3QTKR947 (opens in a new tab)

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Exploitation evidence

What to do

Affected software

Description

AI analysisMachine-generated, updated 24 Sep 2026, 05:22 UTC

Technical details

References

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