CVE-2025-55177

Exploitation

Exploited in the wild. Listed in the CISA Known Exploited Vulnerabilities catalog on 2025-09-02. Federal remediation due 2025-09-23.

SSVC decision

• ExploitationactiveCISA reports credible evidence of active exploitation.
• AutomatablenoAt least one step from reconnaissance to exploitation cannot be reliably automated.
• Technical ImpacttotalSuccessful exploitation gives total control of the vulnerable component.

CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.

EPSS probability

13.51% probability of exploitation activity in the next 30 days.

EPSS percentile

Equal to or higher than the score of 96.4% of scored records. A rank, not a probability.

NVD base score

5.4 (CVSS v3.x), scored by the NVD independently of the CNA.

NVD CVSS vector

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

NVD analysis status

Analyzed. NVD last modified this record on 2026-10-18.

Red Hat severity

No Red Hat rating. Red Hat rates the CVEs that affect its products.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

Published

2025-08-29 15:50Z1 YR AGO

Last updated

2026-10-07 17:57Z22 DAYS AGO

Reserved

2025-08-08

Assigning CNA

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Record state

PUBLISHED

Severity

Medium (CVSS 5.4)

CNA CVSS vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N/E:F/RL:O/RC:C

Weaknesses

• CWE-863Incorrect AuthorizationClass

Data version

5.2

Document digest

41d12e586fd8fbd60d202b6e2aa4285e90bd416614295475e479d45e64495b46

• www.facebook.comhttps://www.facebook.com/security/advisories/cve-2025-55177x_refsource_CONFIRM
• www.whatsapp.comhttps://www.whatsapp.com/security/advisories/2025/x_refsource_CONFIRM
• www.cisa.govhttps://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-55177government-resource