CVE-2023-38703

CRITICALNVD 9.89.8—
EchelonGraph scoreMEDIUM confidence

This critical-severity CVE scores 9.8 under NVD CVSS v3. EPSS exploit probability: 1.3%, top 33% 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
9.8EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 1%CVSS: 9.8Exploit: 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 with high level API in C, C++, Java, C#, and Python languages. SRTP is a higher level media transport which is stacked upon a lower level media transport such as UDP and ICE. Currently a higher level transport is not synchronized with its lower level transport that may introduce use-after-free issue. This vulnerability affects applications that have SRTP capability (PJMEDIA_HAS_SRTP is set) and use underlying media transport other than UDP. This vulnerability’s impact may range from unexpected application termination to control flow hijack/memory corruption. The patch is available as a commit in the master branch.

CVSS v3
9.8
EG Score
9.8(medium)
EG Risk
60(Track)
EG Risk 60/100SSVC: 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
Severity98% × 45%
Exploitation1% × 40%
Automatability100% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
1%
EPSS %ILE
67%
KEV
Not listed

Published

October 6, 2023

Last Modified

April 10, 2025

Advisory Details (3)

Auto-updated Aug 6, 2026
Patch available. Sources: github_commit, github.
generic Patch Available

[SECURITY] [DLA 3696-1] asterisk security update

https://lists.debian.org/debian-lts-announce/2023/12/msg00019.html
github Patch Available

Use-after-free in SRTP media transport · Advisory · pjsip/pjproject · GitHub

https://github.com/pjsip/pjproject/security/advisories/GHSA-f76w-fh7c-pc66
github_commit Patch Available

commit 6dc9b8c181af (pjsip/pjproject)

Patch available: pjsip/pjproject 2.14 (contains commit 6dc9b8c181af)

https://github.com/pjsip/pjproject/commit/6dc9b8c181aff39845f02b4626e0812820d4ef0d

Affected Packages

(12 across 11 ecosystems)
Debian:11(2)
PackageVulnerable rangeFixed inDependents
asterisk1:16.16.1~dfsg+~2.10-1 ... 1:16.28.0~dfsg-0+deb11u3 (15 versions)1:16.28.0~dfsg-0+deb11u4—
ring20210112.2.b757bac~ds1-1 ... 20231201.0~ds1-1 (18 versions)——
Alpine:v3.18(1)
PackageVulnerable rangeFixed inDependents
pjproject—2.14-r0—
Alpine:v3.19(1)
PackageVulnerable rangeFixed inDependents
pjproject—2.14-r0—
Alpine:v3.20(1)
PackageVulnerable rangeFixed inDependents
pjproject—2.14-r0—
Alpine:v3.21(1)
PackageVulnerable rangeFixed inDependents
pjproject—2.14-r0—
Alpine:v3.22(1)
PackageVulnerable rangeFixed inDependents
pjproject—2.14-r0—
Alpine:v3.23(1)
PackageVulnerable rangeFixed inDependents
pjproject—2.14-r0—
Alpine:v3.24(1)
PackageVulnerable rangeFixed inDependents
pjproject—2.14-r0—
Debian:10(1)
PackageVulnerable rangeFixed inDependents
asterisk1:16.10.0~dfsg-1 ... 1:16.28.0~dfsg-0+deb10u3 (22 versions)1:16.28.0~dfsg-0+deb10u4—
Debian:12(1)
PackageVulnerable rangeFixed inDependents
ring20230206.0~ds2-1.1 ... 20231201.0~ds1-1 (7 versions)——
Debian:14(1)
PackageVulnerable rangeFixed inDependents
asterisk0.1.11-3 ... 1:20.6.0~dfsg+~cs6.13.40431414-2 (272 versions)1:20.8.1~dfsg+~cs6.14.40431414-1—

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 8× in last 7d / 45× 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 135 total refreshes for this CVE.

  1. 2026-08-09 13:44 UTCEPSS rescore
  2. 2026-08-08 16:34 UTCEPSS rescore
  3. 2026-08-07 16:24 UTCEPSS rescore
  4. 2026-08-06 13:44 UTCEPSS rescore
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  11. 2026-08-02 00:36 UTCOSV refresh
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  24. 2026-07-23 02:25 UTCEG score recompute
  25. 2026-07-22 23:11 UTCEG score recompute
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  1. 2026-07-22 14:06 UTCEPSS rescore
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  9. 2026-07-18 10:03 UTCEPSS rescore
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  11. 2026-07-16 17:01 UTCEPSS rescore
  12. 2026-07-15 16:56 UTCEPSS rescore
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  14. 2026-07-15 07:49 UTCOSV refresh
  15. 2026-07-15 01:58 UTCEPSS rescore
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  17. 2026-07-13 22:28 UTCEPSS rescore
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  21. 2026-07-12 05:45 UTCEPSS rescore
  22. 2026-07-11 08:26 UTCEPSS rescore
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  24. 2026-07-09 19:08 UTCEPSS rescore
  25. 2026-07-09 19:08 UTCEPSS rescore
  26. 2026-07-08 15:13 UTCEPSS rescore
  27. 2026-07-07 13:44 UTCEPSS rescore
  28. 2026-07-06 16:26 UTCEPSS rescore
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  30. 2026-07-06 02:21 UTCEPSS rescore
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  41. 2026-06-28 04:55 UTCEPSS rescore
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  43. 2026-06-27 08:34 UTCOSV refresh
  44. 2026-06-27 03:07 UTCEPSS rescore
  45. 2026-06-27 03:07 UTCEPSS rescore
  46. 2026-06-25 13:48 UTCEPSS rescore
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  48. 2026-06-24 14:04 UTCEPSS rescore
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  50. 2026-06-23 21:31 UTCEPSS rescore
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  67. 2026-06-14 23:16 UTCEPSS rescore
  68. 2026-06-13 22:59 UTCEPSS rescore
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  70. 2026-06-12 23:10 UTCEPSS rescore
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  72. 2026-06-11 13:59 UTCEPSS rescore
  73. 2026-06-11 13:59 UTCEPSS rescore
  74. 2026-06-10 22:17 UTCEPSS rescore
  75. 2026-06-10 13:21 UTCEPSS rescore

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2023-38703?
CVE-2023-38703 is a critical vulnerability published on October 6, 2023. PJSIP is a free and open source multimedia communication library written in C with high level API in C, C++, Java, C#, and Python languages. SRTP is a higher level media transport which is stacked upon a lower level media transport such as UDP and ICE. Currently a higher level transport is not…
When was CVE-2023-38703 disclosed?
CVE-2023-38703 was first published in the National Vulnerability Database on October 6, 2023, with the most recent update on April 10, 2025. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2023-38703 actively exploited?
CVE-2023-38703 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 1% probability of exploitation in the next 30 days, which ranks it in the top 32.7% of all scored CVEs.
What is the CVSS score of CVE-2023-38703?
CVE-2023-38703 has a CVSS v3 base score of 9.8 (NVD).
How do I remediate CVE-2023-38703?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2023-38703, 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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