CVE-2026-71980

HIGHPre-NVD 7.57.5—
EchelonGraph scoreHIGH 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 — 4 sources updated this weekElevated
7.5EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 7.5Exploit: Elevated riskExposed: 0

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

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
7.5(high)
EG Risk
65(Attend)
EG Risk 65/100SSVC: Attend

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%
Action: Remediate soon — notable exploitation risk.
EPSS PROB
0%
EPSS %ILE
27%
KEV
Not listed

Published

August 17, 2026

Last Modified

August 17, 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 19× in last 7d / 19× 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.

  1. 2026-08-21 04:55 UTCEG score recompute
  2. 2026-08-21 04:55 UTCGHSA enrichment
  3. 2026-08-20 22:56 UTCEPSS rescore
  4. 2026-08-20 17:22 UTCGHSA enrichment
  5. 2026-08-20 05:50 UTCGHSA enrichment
  6. 2026-08-19 18:17 UTCEG score recompute
  7. 2026-08-19 18:17 UTCGHSA enrichment
  8. 2026-08-19 17:04 UTCEPSS rescore
  9. 2026-08-19 06:14 UTCGHSA enrichment
  10. 2026-08-18 18:33 UTCEG score recompute
  11. 2026-08-18 18:33 UTCGHSA enrichment
  12. 2026-08-18 13:49 UTCEPSS rescore
  13. 2026-08-18 13:49 UTCEPSS rescore
  14. 2026-08-18 07:00 UTCGHSA enrichment
  15. 2026-08-17 19:27 UTCEG score recompute
  16. 2026-08-17 19:27 UTCGHSA enrichment
  17. 2026-08-17 18:22 UTCEG score recompute
  18. 2026-08-17 18:00 UTCEG score recompute
  19. 2026-08-17 18:00 UTCMITRE cvelistV5first tracked

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 in the National Vulnerability Database on August 17, 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% probability of exploitation in the next 30 days, which ranks it in the top 73.0% of all scored CVEs.
What is the CVSS score of CVE-2026-71980?
CVE-2026-71980 has a CVSS v3 base score of 7.5 (NVD).
How do I remediate CVE-2026-71980?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-71980, 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.

Dependency Blast Radius

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