CVE-2025-20196: A vulnerability in the Cisco IOx application hosting environment of Cisco IOS Software and Cisco IOS XE Softwa

Q: How do I fix CVE-2025-20196?

ios xe: upgrade to 17.15.2; cgr1000 firmware: mitigate or apply the listed mitigation; ir510 wpan firmware: mitigate or apply the listed mitigation. Exact commands for each OS are on this page.

Q: Is CVE-2025-20196 being exploited?

CVE-2025-20196 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2025-20196 affect?

CVE-2025-20196 affects ios xe, cgr1000 firmware, ir510 wpan firmware. Severity is medium (CVSS 5.3). A vulnerability in the Cisco IOx application hosting environment of Cisco IOS Software and Cisco IOS XE Software could allow an unauthenticated, remote attacker to cause the Cisco IOx application hosting environment to stop responding, resu

Q: How urgent is CVE-2025-20196?

Priority 33/100. Remotely exploitable, no login, no user action

Routine

MEDIUM 5.3REMOTEUPGRADEMITIGATEMITIGATE

CVE-2025-20196 is a medium-severity flaw (CVSS 5.3) affecting ios xe, cgr1000 firmware, ir510 wpan firmware. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

A vulnerability in the Cisco IOx application hosting environment of Cisco IOS Software and Cisco IOS XE Software could allow an unauthenticated, remote attacker to cause the Cisco IOx application hosting environment to stop responding, resulting in a denial of service (DoS) condition. This vulnerability is due to the improper handling of HTTP requests. An attacker could exploit this vulnerability by sending crafted HTTP requests to an affected

Why this priority

Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	5.3 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	0.4% (top 64%)
CISA exploited list	No
Weakness	CWE-307
Published	2025-05-07
Last modified	2026-06-17

Publisher (CNA): Cisco Systems, Inc. · Vendor: cisco

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2025-05-07 18:15 UTCPublished CVE record published
2026-06-17 08:41 UTCUpdated Record last modified

cisco ios xe UPGRADE

Affected: 16.1.1 · 16.1.2 · 16.1.3 · 16.2.1 · 16.2.2 · 16.3.1 · 16.3.1a · 16.3.2

Fixed in: 17.15.2

Safe to downgrade to: no unaffected older release

Check your OS release

cat /etc/os-release; uname -r

Debian / Ubuntu

sudo apt update && sudo apt full-upgrade

RHEL / Amazon Linux / Fedora

sudo dnf upgrade --refresh

Windows

Install the latest cumulative update from Windows Update

If no patch exists yet

OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.

cisco cgr1000 firmware MITIGATE

Affected: < 15.9\(3\)m12

Fixed in: 15.9\(3\)m12

Safe to downgrade to: no unaffected older release

Check your OS release

cat /etc/os-release; uname -r

Debian / Ubuntu

sudo apt update && sudo apt full-upgrade

RHEL / Amazon Linux / Fedora

sudo dnf upgrade --refresh

Windows

Install the latest cumulative update from Windows Update

If no patch exists yet

OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.

cisco ir510 wpan firmware MITIGATE

Affected: all versions

Fixed in: no fixed release known

Safe to downgrade to: no unaffected older release

Check your OS release

cat /etc/os-release; uname -r

Debian / Ubuntu

sudo apt update && sudo apt full-upgrade

RHEL / Amazon Linux / Fedora

sudo dnf upgrade --refresh

Windows

Install the latest cumulative update from Windows Update

If no patch exists yet

OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.

cisco ic3000 industrial compute gateway firmware UPGRADE

Affected: < 1.5.2

Fixed in: 1.5.2

Safe to downgrade to: no unaffected older release

Check your OS release

cat /etc/os-release; uname -r

Debian / Ubuntu

sudo apt update && sudo apt full-upgrade

RHEL / Amazon Linux / Fedora

sudo dnf upgrade --refresh

Windows

Install the latest cumulative update from Windows Update

If no patch exists yet

OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.

cisco 807 industrial integrated services router firmware MITIGATE

Affected: < 15.9\(3\)m11

Fixed in: 15.9\(3\)m11

Safe to downgrade to: no unaffected older release

Check your OS release

cat /etc/os-release; uname -r

Debian / Ubuntu

sudo apt update && sudo apt full-upgrade

RHEL / Amazon Linux / Fedora

sudo dnf upgrade --refresh

Windows

Install the latest cumulative update from Windows Update

If no patch exists yet

OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.

cisco 809 industrial integrated services router firmware MITIGATE

Affected: < 15.9\(3\)m11

Fixed in: 15.9\(3\)m11

Safe to downgrade to: no unaffected older release

Check your OS release

cat /etc/os-release; uname -r

Debian / Ubuntu

sudo apt update && sudo apt full-upgrade

RHEL / Amazon Linux / Fedora

sudo dnf upgrade --refresh

Windows

Install the latest cumulative update from Windows Update

If no patch exists yet

OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2025-20196?

ios xe: upgrade to 17.15.2; cgr1000 firmware: mitigate or apply the listed mitigation; ir510 wpan firmware: mitigate or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2025-20196 being exploited?

CVE-2025-20196 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2025-20196 affect?

CVE-2025-20196 affects ios xe, cgr1000 firmware, ir510 wpan firmware. Severity is medium (CVSS 5.3). A vulnerability in the Cisco IOx application hosting environment of Cisco IOS Software and Cisco IOS XE Software could allow an unauthenticated, remote attacker to cause the Cisco IOx application hosting environment to stop responding, resu

How urgent is CVE-2025-20196?

Priority 33/100. Remotely exploitable, no login, no user action

Software pages

iOS vulnerabilities · Cisco IOS XE vulnerabilities · Cisco vulnerabilities

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References

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