CVE-2026-71980

HIGHPre-NVD 7.57.5—
EchelonGraph scoreMEDIUM confidence

Score 7.5 from GitHub Security Advisory (severity: HIGH) published 2026-08-17. A secondary CVSS source baseline 7.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this weekElevated
7.5EG
EchelonGraph verdictPlan mitigationSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0.6%CVSS: 7.5Exploit: Elevated riskExposed services: Not assessed

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

Belledonne Communications bcg729 through 1.1.2 contains an out-of-bounds read vulnerability in the decodeSIDframe() function in src/cng.c that allows unauthenticated network-adjacent attackers to trigger a heap read beyond buffer boundaries by sending a zero-length comfort-noise RTP payload. A zero-length payload causes an integer underflow in the uint8_t filter order calculation, which wraps to 255 and is clamped to 10, causing the function to unconditionally read 11 bytes from a zero-byte buffer, resulting in media process termination or silent consumption of adjacent heap memory as reflection coefficients.

CVSS v3
7.5
EG Score
7.5HIGHmedium confidence
EG Risk
65
EG Risk 65/100CISA SSVC

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
Severity75% × 45%
Exploitation40% × 40%
Automatability100% × 15%
CISA SSVC: Track at low or medium mission impact; Attend at high (mission-essential systems).
Action: No fix is confirmed yet. Restrict network exposure of the affected system or apply the vendor's mitigation within your standard update timelines at low or medium mission impact and sooner than that at high, and watch the vendor's advisory for the fix.
EPSS PROB
0.6%
EPSS %ILE
47th
KEV
Not listed

CISA SSVCTrack at low or medium mission impact; Attend at high (mission-essential systems).

No fix is confirmed yet. Restrict network exposure of the affected system or apply the vendor's mitigation within your standard update timelines at low or medium mission impact and sooner than that at high, and watch the vendor's advisory for the fix.

Exploitation public PoC (CISA Vulnrichment) · Automatable yes (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). Mission impact is CISA's Mission & Well-being decision point, and only you can judge it: high means the affected system is essential to your organisation's mission, or its compromise could cause irreversible harm to people. CISA's decision table

Published

August 17, 2026

Last Modified

September 24, 2026

Advisory Details (3)

Auto-updated Aug 17, 2026
No patch confirmed yet.
generic

Belledonne Communications bcg729 1.1.2 Out-of-Bounds Read via decodeSIDframe() | Advisories | VulnCheck

https://www.vulncheck.com/advisories/belledonne-communications-bcg729-out-of-bounds-read-via-decodesidframe
generic

Linphone - Communication en temps réel

https://www.linphone.org/
generic

Out-of-bounds heap read in decodeSIDframe() on a zero-length RFC 3389 comfort-noise payload (CVE-2026-71980) · Issue #23 · BelledonneCommunications/bcg729 · GitHub

https://github.com/BelledonneCommunications/bcg729/issues/23

Vendor Advisories for CVE-2026-71980(1)

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

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 23× in last 7d / 100× 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 175 total refreshes for this CVE.

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

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-71980?
CVE-2026-71980 is a high vulnerability published on August 17, 2026. Belledonne Communications bcg729 through 1.1.2 contains an out-of-bounds read vulnerability in the decodeSIDframe() function in src/cng.c that allows unauthenticated network-adjacent attackers to trigger a heap read beyond buffer boundaries by sending a zero-length comfort-noise RTP payload. A…
When was CVE-2026-71980 disclosed?
CVE-2026-71980 was first published on August 17, 2026, with the most recent update on September 24, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-71980 actively exploited?
CVE-2026-71980 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.6% probability of exploitation in the next 30 days (47th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-71980?
CVE-2026-71980 has a CVSS base score of 7.5 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-71980?
No fix for CVE-2026-71980 is confirmed yet. Until one is published, restrict network exposure of the affected system or apply the vendor's mitigation — for example, keep it off the internet or limit it to trusted networks — and watch the vendor's advisory for the fix. The vendor advisories EchelonGraph has for CVE-2026-71980 are linked in the Vendor Advisories panel on this page.

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