CVE-2026-48715

HIGHNVD 8.88.8—
EchelonGraph scoreMEDIUM confidence

This high-severity CVE scores 8.8 under NVD CVSS v3. EPSS exploit probability: 0.2%, top 90% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).

Triggered by: NVD CVSS baseline
Sources: epss, nvd
8.8EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 8.8Exploit: None knownExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

radvd is a router advertisement daemon for IPv6. Prior to version 2.21, the radvdump utility shipped with radvd contains a stack buffer overflow in the Route Information option parser. When processing a crafted ICMPv6 Router Advertisement, print_ff() copies up to 2032 bytes from attacker-controlled packet data into a 16-byte struct in6_addr on the stack, overflowing by up to 2016 bytes. Note that the main radvd daemon is not affected by the vulnerability. Version 2.21 patches the issue.

CVSS v3
8.8
EG Score
8.8(medium)
EG Risk
44(Track)
EG Risk 44/100SSVC: Track

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity88% × 45%
Exploitation0% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
10%
KEV
Not listed

Published

June 19, 2026

Last Modified

June 26, 2026

Advisory Details (2)

Auto-updated Jun 19, 2026
Patch available. Sources: github_commit, github.
github Patch Available

Stack Buffer Overflow in radvdump Route Information Option Parser · Advisory · radvd-project/radvd · GitHub

https://github.com/radvd-project/radvd/security/advisories/GHSA-52px-gh9p-m379
github_commit

commit 068bde13e3fd (radvd-project/radvd)

Fix landed in radvd-project/radvd commit 068bde13e3fd — awaiting tagged release

https://github.com/radvd-project/radvd/commit/068bde13e3fd6a5fcdb6859e6a2acd293a325dc5

Vendor Advisories for CVE-2026-48715(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Affected Packages

(5 across 5 ecosystems)
Alpine:v3.24(1)
PackageVulnerable rangeFixed inDependents
radvd—2.21-r0—
Debian:11(1)
PackageVulnerable rangeFixed inDependents
radvd1:2.18-3 ... 1:2.20-1~bpo12+1 (6 versions)——
Debian:12(1)
PackageVulnerable rangeFixed inDependents
radvd1:2.19-1, 1:2.19-2, 1:2.19-2.1, 1:2.20-1, 1:2.20-1~bpo12+1——
Debian:13(1)
PackageVulnerable rangeFixed inDependents
radvd1:2.20-1——
Debian:14(1)
PackageVulnerable rangeFixed inDependents
radvd1:2.20-1——

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 5× in last 7d / 57× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

Showing the most recent 100 of 185 total refreshes for this CVE.

  1. 2026-09-11 14:53 UTCEPSS rescore
  2. 2026-09-10 09:35 UTCEPSS rescore
  3. 2026-09-08 22:01 UTCEPSS rescore
  4. 2026-09-07 16:01 UTCEPSS rescore
  5. 2026-09-06 13:47 UTCEPSS rescore
  6. 2026-09-04 05:06 UTCEPSS rescore
  7. 2026-09-02 14:12 UTCEPSS rescore
  8. 2026-09-01 13:54 UTCEPSS rescore
  9. 2026-09-01 04:40 UTCEPSS rescore
  10. 2026-08-30 20:47 UTCEG score recompute
  11. 2026-08-30 20:47 UTCVendor advisory
  12. 2026-08-30 19:17 UTCEPSS rescore
  13. 2026-08-30 01:22 UTCEPSS rescore
  14. 2026-08-28 21:41 UTCEPSS rescore
  15. 2026-08-27 14:25 UTCEPSS rescore
  16. 2026-08-26 14:46 UTCEPSS rescore
  17. 2026-08-25 13:49 UTCEPSS rescore
  18. 2026-08-25 01:36 UTCEG score recompute
  19. 2026-08-25 01:36 UTCVendor advisory
  20. 2026-08-24 14:00 UTCEG score recompute
  21. 2026-08-24 14:00 UTCVendor advisory
  22. 2026-08-23 23:16 UTCVendor advisory
  23. 2026-08-23 11:16 UTCEG score recompute
  24. 2026-08-23 11:16 UTCVendor advisory
  25. 2026-08-23 00:19 UTCEPSS rescore
Show 75 more
  1. 2026-08-22 23:40 UTCEG score recompute
  2. 2026-08-22 23:40 UTCVendor advisory
  3. 2026-08-21 23:49 UTCEPSS rescore
  4. 2026-08-21 07:20 UTCEG score recompute
  5. 2026-08-21 07:20 UTCVendor advisory
  6. 2026-08-20 22:55 UTCEPSS rescore
  7. 2026-08-20 19:36 UTCVendor advisory
  8. 2026-08-20 08:00 UTCEG score recompute
  9. 2026-08-20 08:00 UTCVendor advisory
  10. 2026-08-19 17:04 UTCEPSS rescore
  11. 2026-08-19 07:00 UTCEG score recompute
  12. 2026-08-19 07:00 UTCVendor advisory
  13. 2026-08-18 13:48 UTCEPSS rescore
  14. 2026-08-17 13:47 UTCEPSS rescore
  15. 2026-08-17 08:24 UTCVendor advisory
  16. 2026-08-16 20:48 UTCEG score recompute
  17. 2026-08-16 20:48 UTCVendor advisory
  18. 2026-08-16 14:56 UTCEPSS rescore
  19. 2026-08-16 09:12 UTCEG score recompute
  20. 2026-08-16 09:12 UTCVendor advisory
  21. 2026-08-16 02:14 UTCEPSS rescore
  22. 2026-08-15 21:36 UTCVendor advisory
  23. 2026-08-15 10:00 UTCEG score recompute
  24. 2026-08-15 10:00 UTCVendor advisory
  25. 2026-08-15 01:30 UTCEPSS rescore
  26. 2026-08-14 22:24 UTCVendor advisory
  27. 2026-08-14 10:48 UTCVendor advisory
  28. 2026-08-13 23:12 UTCEG score recompute
  29. 2026-08-13 23:12 UTCVendor advisory
  30. 2026-08-13 22:00 UTCEPSS rescore
  31. 2026-08-13 11:34 UTCVendor advisory
  32. 2026-08-12 23:58 UTCEG score recompute
  33. 2026-08-12 13:51 UTCEPSS rescore
  34. 2026-08-12 12:22 UTCVendor advisory
  35. 2026-08-12 00:36 UTCEG score recompute
  36. 2026-08-12 00:36 UTCVendor advisory
  37. 2026-08-11 13:00 UTCVendor advisory
  38. 2026-08-11 01:24 UTCEG score recompute
  39. 2026-08-11 01:24 UTCVendor advisory
  40. 2026-08-11 00:00 UTCEPSS rescore
  41. 2026-08-10 13:48 UTCVendor advisory
  42. 2026-08-09 14:36 UTCEG score recompute
  43. 2026-08-09 14:36 UTCVendor advisory
  44. 2026-08-09 13:46 UTCEPSS rescore
  45. 2026-08-09 03:00 UTCEG score recompute
  46. 2026-08-09 03:00 UTCVendor advisory
  47. 2026-08-08 16:37 UTCEPSS rescore
  48. 2026-08-08 15:24 UTCVendor advisory
  49. 2026-08-08 03:47 UTCEG score recompute
  50. 2026-08-07 04:35 UTCVendor advisory
  51. 2026-08-06 16:59 UTCEG score recompute
  52. 2026-08-06 16:59 UTCVendor advisory
  53. 2026-08-06 13:47 UTCEPSS rescore
  54. 2026-08-06 05:23 UTCEG score recompute
  55. 2026-08-06 05:23 UTCVendor advisory
  56. 2026-08-05 19:17 UTCEPSS rescore
  57. 2026-08-05 02:55 UTCVendor advisory
  58. 2026-08-04 15:19 UTCEG score recompute
  59. 2026-08-04 15:19 UTCVendor advisory
  60. 2026-08-04 15:10 UTCEPSS rescore
  61. 2026-08-04 10:39 UTCEPSS rescore
  62. 2026-08-03 19:44 UTCEG score recompute
  63. 2026-08-03 10:36 UTCEPSS rescore
  64. 2026-08-02 20:12 UTCVendor advisory
  65. 2026-08-02 08:36 UTCEG score recompute
  66. 2026-08-02 08:36 UTCVendor advisory
  67. 2026-08-02 02:27 UTCEPSS rescore
  68. 2026-08-01 21:00 UTCVendor advisory
  69. 2026-08-01 09:23 UTCEG score recompute
  70. 2026-08-01 09:23 UTCVendor advisory
  71. 2026-08-01 04:16 UTCEPSS rescore
  72. 2026-07-31 21:47 UTCVendor advisory
  73. 2026-07-31 10:06 UTCVendor advisory
  74. 2026-07-30 22:18 UTCEG score recompute
  75. 2026-07-30 16:28 UTCEPSS rescore

Frequently asked(5)

What is CVE-2026-48715?
CVE-2026-48715 is a high vulnerability published on June 19, 2026. radvd is a router advertisement daemon for IPv6. Prior to version 2.21, the radvdump utility shipped with radvd contains a stack buffer overflow in the Route Information option parser. When processing a crafted ICMPv6 Router Advertisement, printff() copies up to 2032 bytes from attacker-controlled…
When was CVE-2026-48715 disclosed?
CVE-2026-48715 was first published in the National Vulnerability Database on June 19, 2026, with the most recent update on June 26, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-48715 actively exploited?
CVE-2026-48715 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0% probability of exploitation in the next 30 days, which ranks it in the top 89.6% of all scored CVEs.
What is the CVSS score of CVE-2026-48715?
CVE-2026-48715 has a CVSS v3 base score of 8.8 (NVD).
How do I remediate CVE-2026-48715?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-48715, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

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