CVE-2026-40614

HIGHNVD 8.88.8—
EchelonGraph scoreMEDIUM confidence

This high-severity CVE scores 8.8 under NVD CVSS v3. EPSS exploit probability: 0.2%, top 87% 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.

PJSIP is a free and open source multimedia communication library written in C. In 2.16 and earlier, there is a buffer overflow when decoding Opus audio frames due to insufficient buffer size validation in the Opus codec decode path. The FEC decode buffers (dec_frame[].buf) were allocated based on a PCM-derived formula: (sample_rate/1000) * 60 * channel_cnt * 2. At 8 kHz mono this yields only 960 bytes, but codec_parse() can output encoded frames up to MAX_ENCODED_PACKET_SIZE (1280) bytes via opus_repacketizer_out_range(). The three pj_memcpy() calls in codec_decode() copied input->size bytes without bounds checking, causing a heap buffer overflow.

CVSS v3
8.8
EG Score
8.8(medium)
EG Risk
40(Track)
EG Risk 40/100SSVC: 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%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
13%
KEV
Not listed

Published

April 21, 2026

Last Modified

April 23, 2026

Advisory Details (2)

Auto-updated May 2, 2026
Patch available. Sources: github.
github Patch Available

Heap buffer overflow in Opus codec decoding · Advisory · pjsip/pjproject · GitHub

https://github.com/pjsip/pjproject/security/advisories/GHSA-j59p-4xrr-fp8g
generic

Merge commit from fork · pjsip/pjproject@17897e8 · GitHub

https://github.com/pjsip/pjproject/commit/17897e835818f8ee03b1806ddcd7b95ea16d2c0e

Affected Packages

(3 across 3 ecosystems)
Alpine:v3.24(1)
PackageVulnerable rangeFixed inDependents
pjproject—2.17-r0—
Debian:11(1)
PackageVulnerable rangeFixed inDependents
asterisk1:16.16.1~dfsg+~2.10-1 ... 1:16.28.0~dfsg-0+deb11u9 (21 versions)1:16.28.0~dfsg-0+deb11u10—
Debian:14(1)
PackageVulnerable rangeFixed inDependents
asterisk0.1.11-3 ... 1:22.9.0+dfsg+~cs6.16.60671434-1 (291 versions)1:22.10.0+dfsg+~cs6.17.60671434-1—

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 6× in last 7d / 26× 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 153 total refreshes for this CVE.

  1. 2026-09-15 03:11 UTCEPSS rescore
  2. 2026-09-13 16:47 UTCEPSS rescore
  3. 2026-09-12 15:01 UTCEPSS rescore
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  11. 2026-09-02 03:09 UTCOSV refresh
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  1. 2026-08-16 14:56 UTCEPSS rescore
  2. 2026-08-16 06:17 UTCEG score recompute
  3. 2026-08-16 02:14 UTCEPSS rescore
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  5. 2026-08-14 04:28 UTCEG score recompute
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  9. 2026-08-11 16:51 UTCEG score recompute
  10. 2026-08-11 13:43 UTCEPSS rescore
  11. 2026-08-11 02:25 UTCEG score recompute
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  13. 2026-08-09 16:49 UTCEG score recompute
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  20. 2026-08-05 23:10 UTCEG score recompute
  21. 2026-08-05 19:17 UTCEPSS rescore
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  24. 2026-08-03 21:22 UTCEG score recompute
  25. 2026-08-03 10:36 UTCEPSS rescore
  26. 2026-08-02 12:45 UTCEG score recompute
  27. 2026-08-02 02:27 UTCEPSS rescore
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  39. 2026-07-23 03:11 UTCEG score recompute
  40. 2026-07-22 14:08 UTCEPSS rescore
  41. 2026-07-21 15:24 UTCEPSS rescore
  42. 2026-07-20 17:08 UTCEPSS rescore
  43. 2026-07-20 05:16 UTCOSV refresh
  44. 2026-07-19 14:31 UTCEPSS rescore
  45. 2026-07-19 02:29 UTCEPSS rescore
  46. 2026-07-18 10:04 UTCEPSS rescore
  47. 2026-07-16 17:03 UTCEPSS rescore
  48. 2026-07-15 16:57 UTCEPSS rescore
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  73. 2026-06-24 14:05 UTCEPSS rescore
  74. 2026-06-23 21:33 UTCEPSS rescore
  75. 2026-06-22 14:25 UTCEPSS rescore

Frequently asked(5)

What is CVE-2026-40614?
CVE-2026-40614 is a high vulnerability published on April 21, 2026. PJSIP is a free and open source multimedia communication library written in C. In 2.16 and earlier, there is a buffer overflow when decoding Opus audio frames due to insufficient buffer size validation in the Opus codec decode path. The FEC decode buffers (decframe[].buf) were allocated based on a…
When was CVE-2026-40614 disclosed?
CVE-2026-40614 was first published in the National Vulnerability Database on April 21, 2026, with the most recent update on April 23, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-40614 actively exploited?
CVE-2026-40614 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 86.9% of all scored CVEs.
What is the CVSS score of CVE-2026-40614?
CVE-2026-40614 has a CVSS v3 base score of 8.8 (NVD).
How do I remediate CVE-2026-40614?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-40614, 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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