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URL: https://nvd.nist.gov/vuln/detail/CVE-2026-28532

⇱ NVD - CVE-2026-28532

  1. Vulnerabilities

CVE-2026-28532 Detail

Description

FRRouting before 10.5.3 contains an integer overflow vulnerability in seven OSPF Traffic Engineering and Segment Routing TLV parser functions where a uint16_t accumulator variable truncates uint32_t values returned by the TLV_SIZE() macro, causing the loop termination condition to fail while pointer advancement continues unchecked. Attackers with an established OSPF adjacency can send a crafted LS Update packet with a malicious Type 10 or Type 11 Opaque LSA to trigger out-of-bounds memory reads and crash all affected routers in the OSPF area or autonomous system.


Metrics

 
NVD enrichment efforts reference publicly available information to associate vector strings. CVSS information contributed by other sources is also displayed.
CVSS 4.0 Severity and Vector Strings:

NVD assessment not yet provided.

CVSS-B 6.0 MEDIUM
Vector:  CVSS:4.0/AV:A/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N

References to Advisories, Solutions, and Tools

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URL Source(s) Tag(s)
https://github.com/FRRouting/frr/commit/f098decf02987fbf1c891766c1516ac832adadfd VulnCheck Patch 
https://github.com/FRRouting/frr/pull/21002 VulnCheck Issue Tracking  Patch 
https://github.com/FRRouting/frr/releases/tag/frr-10.5.3 VulnCheck Release Notes 
https://www.vulncheck.com/advisories/frrouting-integer-overflow-in-ospf-tlv-parser-functions VulnCheck Third Party Advisory 

Weakness Enumeration

CWE-ID CWE Name Source
CWE-125 Out-of-bounds Read VulnCheck  
CWE-190 Integer Overflow or Wraparound VulnCheck  

Known Affected Software Configurations Switch to CPE 2.2

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Denotes Vulnerable Software
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Change History

4 change records found show changes

CVE Modified by CISA-ADP 6/17/2026 6:28:48 AM

Action Type Old Value New Value
Added SSVC 
{"timestamp":"2026-05-01T16:36:13.274707Z","id":"CVE-2026-28532","options":[{"exploitation":"none"},{"automatable":"no"},{"technicalImpact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}

CVE Modified by VulnCheck 6/17/2026 6:28:48 AM

Action Type Old Value New Value
Added Affected 
[{"vendor":"FRRouting","product":"frr","defaultStatus":"affected","versions":[{"version":"0","lessThan":"10.5.3","versionType":"semver","status":"affected"}]}]

Initial Analysis by NIST 5/01/2026 1:48:21 PM

Action Type Old Value New Value
Added CPE Configuration 
OR
 *cpe:2.3:a:frrouting:frrouting:*:*:*:*:*:*:*:* versions up to (excluding) 10.5.3
Added Reference Type 
VulnCheck: https://github.com/FRRouting/frr/commit/f098decf02987fbf1c891766c1516ac832adadfd Types: Patch
Added Reference Type 
VulnCheck: https://github.com/FRRouting/frr/pull/21002 Types: Issue Tracking, Patch
Added Reference Type 
VulnCheck: https://github.com/FRRouting/frr/releases/tag/frr-10.5.3 Types: Release Notes
Added Reference Type 
VulnCheck: https://www.vulncheck.com/advisories/frrouting-integer-overflow-in-ospf-tlv-parser-functions Types: Third Party Advisory

New CVE Received from VulnCheck 4/30/2026 5:16:31 PM

Action Type Old Value New Value
Added Description 
FRRouting before 10.5.3 contains an integer overflow vulnerability in seven OSPF Traffic Engineering and Segment Routing TLV parser functions where a uint16_t accumulator variable truncates uint32_t values returned by the TLV_SIZE() macro, causing the loop termination condition to fail while pointer advancement continues unchecked. Attackers with an established OSPF adjacency can send a crafted LS Update packet with a malicious Type 10 or Type 11 Opaque LSA to trigger out-of-bounds memory reads and crash all affected routers in the OSPF area or autonomous system.
Added CVSS V4.0 
AV:A/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Added CVSS V3.1 
AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Added CWE 
CWE-125
Added CWE 
CWE-190
Added Reference 
https://github.com/FRRouting/frr/commit/f098decf02987fbf1c891766c1516ac832adadfd
Added Reference 
https://github.com/FRRouting/frr/pull/21002
Added Reference 
https://github.com/FRRouting/frr/releases/tag/frr-10.5.3
Added Reference 
https://www.vulncheck.com/advisories/frrouting-integer-overflow-in-ospf-tlv-parser-functions

Quick Info

CVE Dictionary Entry:
CVE-2026-28532
NVD Published Date:
04/30/2026
NVD Last Modified:
06/17/2026
Source:
VulnCheck