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TI-2026-28046 Aliases CVE-2026-37457GHSA-q7jj-qhhg-6m9g

An off-by-one out-of-bounds write vulnerability in the bgp_flowspec_op_decode() function…

Priority LOW 39CWE-787Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
Denial of service
Confidentiality · integrity · availability
None · None · High
Fix status
Fixed

Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA and Red Hat. Impact type from CWE-787 and the CVSS impact.

Summary

An off-by-one out-of-bounds write vulnerability in the bgp_flowspec_op_decode() function (bgpd/bgp_flowspec_util.c) of FRRouting (FRR) stable/10.0 allows attackers to cause a Denial of Service (DoS) via supplying a crafted FlowSpec component.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00389 33rd percentileScored 2026-11-07
Fix Fixed Red Hat: 4 advisories

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
Yes
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
——all versions—No fix listedCNA
  • — Vendor— Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:frrouting:frrouting:10.0:-:*:*:*:*:*:*10.0VulnerableFRRouting
  • cpe:2.3:a:frrouting:frrouting:10.0:-:*:*:*:*:*:* Versions 10.0 Vulnerable ·FRRouting

Remediation

Red Hat 4 advisories

  • RHSA-2026:24371 Released 2026-06-08 · Red Hat rating Important
    frr security update
    • Red Hat Enterprise Linux AppStream (v. 9) frr-8.5.3-13.el9_8, frr-selinux-8.5.3-13.el9_8
  • RHSA-2026:24370 Released 2026-06-08 · Red Hat rating Important
    frr10 security update
    • Red Hat Enterprise Linux AppStream (v. 9) frr10-10.4.3-3.el9_8, frr10-selinux-10.4.3-3.el9_8
  • RHSA-2026:24347 Released 2026-06-08 · Red Hat rating Important
    frr security update
    • Red Hat Enterprise Linux AppStream (v. 10) frr-10.4.4-1.el10_2, frr-selinux-10.4.4-1.el10_2
Show 1 more Red Hat advisories
  • RHSA-2026:24340 Released 2026-06-08 · Red Hat rating Important
    frr security update
    • Red Hat Enterprise Linux AppStream (v. 8) frr-7.5.1-24.el8_10, frr-selinux-7.5.1-24.el8_10

Vendor assessments

Red Hat

Red Hat rating: Important. Red Hat's page for this CVE →

ProductStatusPlan or fix
Red Hat Enterprise Linux AppStream (v. 10)Fixed RHSA-2026:24347
Red Hat Enterprise Linux AppStream (v. 8)Fixed RHSA-2026:24340
Red Hat Enterprise Linux AppStream (v. 9)Fixed RHSA-2026:24370, RHSA-2026:24371

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-37457
  2. 2026-10-03 Alias added: GHSA-q7jj-qhhg-6m9g
  3. 2026-10-25 EPSS moved to the below the 50th percentile
  4. 2026-10-25 Priority changed: MEDIUM → LOW

References

Patch 1

  • TI-2023-20107 FRRouting FRR 7.5.1 through 9.0 and Pica8 PICOS 4.3.3.2 allow a remote attacker to cause… CVSS 3.1HIGH 7.5
  • TI-2023-21958 An issue was discovered in FRRouting FRR 9.0. CVSS 3.1CRITICAL 9.8
  • TI-2024-29658 An issue was discovered in FRRouting (FRR) through 10.1. CVSS 3.1CRITICAL 9.8
  • TI-2023-21957 An issue was discovered in FRRouting FRR through 9.0. CVSS 3.1CRITICAL 9.1
  • TI-2023-19790 bgpd/bgp_flowspec.c in FRRouting (FRR) before 8.4.3 mishandles an nlri length of zero, aka a "flowspec overflow." CVSS 3.1CRITICAL 9.8
  • TI-2022-17234 An out-of-bounds read in the BGP daemon of FRRouting FRR before 8.4 may lead to a… CVSS 3.1CRITICAL 9.1
See all 47 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences