CVE-2025-61102Network attack vector

ospfd crash via unchecked VTY context

Published Oct 27, 2025 · Updated Oct 27, 2025

NULL pointer dereference in FRRouting FRR 4.0 through 10.4.1 allows remote attackers to crash ospfd with a crafted OSPF packet. When detailed OSPF packet debugging is enabled, show_vty_ext_link_adj_sid passes a NULL VTY context to vty_out while dumping an opaque LSA. The debug ospf packet all send/recv detail setting is required, and exploitation interrupts the OSPF routing process rather than the host.

CVSS severity7.5
High
EPSS probability0.47%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

NULL pointer dereference in FRRouting FRR 4.0 through 10.4.1 allows remote attackers to crash ospfd with a crafted OSPF packet. When detailed OSPF packet debugging is enabled, show_vty_ext_link_adj_sid passes a NULL VTY context to vty_out while dumping an opaque LSA. The debug ospf packet all send/recv detail setting is required, and exploitation interrupts the OSPF routing process rather than the host.

The record

CVE
CVE-2025-61102
Published
Oct 27, 2025
Updated
Oct 27, 2025
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-476, T1499.004
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Oct 27, 2025CVE publishedPublication date reported by the CVE source.
  2. Oct 27, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

7.5CISA-ADPCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-476NULL Pointer Dereference
T1499.004Application or System Exploitation

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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