CVE-2025-20360
CVE-2025-20360 is a medium-severity vulnerability with a CVSS 3.x base score of 5.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-805.
Key facts
- Severity: Medium (CVSS 3.x base score 5.8)
- EPSS exploit prediction: 0% (28th percentile)
- Actively exploited: Not listed in CISA KEV
- EU (EUVD) id: EUVD-2025-34664
- Weakness: CWE-805
- Published:
- Last modified:
Description
Multiple Cisco products are affected by a vulnerability in the Snort 3 HTTP Decoder that could allow an unauthenticated, remote attacker to cause the Snort 3 Detection Engine to restart. This vulnerability is due to a lack of complete error checking when the MIME fields of the HTTP header are parsed. An attacker could exploit this vulnerability by sending crafted HTTP packets through an established connection to be parsed by Snort 3. A successful exploit could allow the attacker to cause a DoS condition when the Snort 3 Detection Engine unexpectedly restarts.
Frequently asked questions
- What is CVE-2025-20360?
- Multiple Cisco products are affected by a vulnerability in the Snort 3 HTTP Decoder that could allow an unauthenticated, remote attacker to cause the Snort 3 Detection Engine to restart. This vulnerability is due to a lack of complete error checking when the MIME fields of the HTTP header are parsed. An attacker could exploit this vulnerability by sending crafted HTTP packets through an established connection to be parsed by Snort 3. A successful exploit could allow the attacker to cause a DoS condition when the Snort 3 Detection Engine unexpectedly restarts.
- How severe is CVE-2025-20360?
- CVE-2025-20360 has a CVSS 3.x base score of 5.8, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability low.
- Is CVE-2025-20360 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (28th percentile), an estimate of the probability of exploitation in the next 30 days.
- How do I fix CVE-2025-20360?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
- Does CVE-2025-20360 have an EU (EUVD) identifier?
- Yes. CVE-2025-20360 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-34664.
- When was CVE-2025-20360 published?
- CVE-2025-20360 was published on 2025-10-15 and last updated on 2026-06-17.
References
Other CWE-805 vulnerabilities
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- CVE-2025-20315 — High (CVSS 8.6): A vulnerability in the Network-Based Application Recognition (NBAR) feature of Cisco IOS XE Software could allow an…
- CVE-2026-53016 — High (CVSS 7.8): In the Linux kernel, the following vulnerability has been resolved: crypto: ccp - copy IV using skcipher…
- CVE-2025-38743 — High (CVSS 7.8): Dell iDRAC Service Module (iSM), versions prior to 6.0.3.0, contains a Buffer Access with Incorrect Length Value…
- CVE-2025-20175 — High (CVSS 7.7): A vulnerability in the SNMP subsystem of Cisco IOS Software and Cisco IOS XE Software could allow an authenticated,…
- CVE-2025-20174 — High (CVSS 7.7): A vulnerability in the SNMP subsystem of Cisco IOS Software and Cisco IOS XE Software could allow an authenticated,…