CVE-2022-21723

CRITICALNVD 9.19.1—
EchelonGraph scoreMEDIUM confidence

This critical-severity CVE scores 9.1 under NVD CVSS v3. EPSS exploit probability: 4.5%, top 10% 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
9.1
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 4%CVSS: 9.1Exploit: NoneExposed: 0

A fix is available — apply it.

PJSIP is a free and open source multimedia communication library written in C language implementing standard based protocols such as SIP, SDP, RTP, STUN, TURN, and ICE. In versions 2.11.1 and prior, parsing an incoming SIP message that contains a malformed multipart can potentially cause out-of-bound read access. This issue affects all PJSIP users that accept SIP multipart. The patch is available as commit in the master branch. There are no known workarounds.

CVSS v3
9.1
EG Score
9.1(medium)
EG Risk
58(Track)
EG Risk 58/100SSVC: 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
Severity91% × 45%
Exploitation4% × 40%
Automatability100% × 15%
Action: Routine — remediate on your standard cadence.
EPSS
90.5%
KEV
Not listed

Published

January 27, 2022

Last Modified

November 4, 2025

Advisory Details (9)

Auto-updated Jul 23, 2026
Patch available. Sources: github, github_commit.
generic

Packet Storm Security

http://packetstormsecurity.com/files/166227/Asterisk-Project-Security-Advisory-AST-2022-006.html
generic

[SECURITY] [DSA 5285-1] asterisk security update

https://www.debian.org/security/2022/dsa-5285
generic

PJSIP: Multiple Vulnerabilities (GLSA 202210-37) — Gentoo security

https://security.gentoo.org/glsa/202210-37
generic Patch Available

[SECURITY] [DLA 3549-1] ring security update

https://lists.debian.org/debian-lts-announce/2023/08/msg00038.html
generic Patch Available

[SECURITY] [DLA 3194-1] asterisk security update

https://lists.debian.org/debian-lts-announce/2022/11/msg00021.html
generic Patch Available

[SECURITY] [DLA 2962-1] pjproject security update

https://lists.debian.org/debian-lts-announce/2022/03/msg00035.html
github Patch Available

Prevent OOB read in multipart parsing · Advisory · pjsip/pjproject · GitHub

https://github.com/pjsip/pjproject/security/advisories/GHSA-7fw8-54cv-r7pm
github_commit Patch Available

commit 077b465c33f0 (pjsip/pjproject)

Patch available: pjsip/pjproject 2.12 (contains commit 077b465c33f0)

https://github.com/pjsip/pjproject/commit/077b465c33f0aec05a49cd2ca456f9a1b112e896
generic

Full Disclosure: AST-2022-006: pjproject: unconstrained malformed multipart SIP message

http://seclists.org/fulldisclosure/2022/Mar/2

Patch Availability(1)

Vendor / EcosystemFixed in / PatchReleasedSource
ubuntujami-daemon (20230206.0~ds1-5ubuntu0.1) @ lunar2026-05-26ubuntu

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

Weakness Classification(1)

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

All Vendor Advisories

(1)

Every vendor that published an advisory referencing this CVE — pulled from our cve_vendor_advisories aggregation. Click any row for the vendor's original advisory page.

Data Freshness Timeline

(refreshed 13× in last 7d / 43× 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. 2026-07-24 14:15 UTCEPSS rescore
  2. 2026-07-23 14:16 UTCEPSS rescore
  3. 2026-07-23 02:08 UTCEG score recompute
  4. 2026-07-22 22:54 UTCEG score recompute
  5. 2026-07-22 14:06 UTCEPSS rescore
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  7. 2026-07-21 15:22 UTCEPSS rescore
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  14. 2026-07-18 02:29 UTCOSV refresh
  15. 2026-07-16 17:00 UTCEPSS rescore
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  17. 2026-07-15 16:56 UTCEPSS rescore
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  21. 2026-07-13 22:27 UTCEPSS rescore
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  24. 2026-07-12 05:44 UTCEPSS rescore
  25. 2026-07-11 08:25 UTCEPSS rescore
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  1. 2026-07-09 19:07 UTCEPSS rescore
  2. 2026-07-08 15:12 UTCEPSS rescore
  3. 2026-07-06 16:25 UTCEPSS rescore
  4. 2026-07-06 16:25 UTCEPSS rescore
  5. 2026-07-06 02:21 UTCEPSS rescore
  6. 2026-07-05 02:28 UTCEPSS rescore
  7. 2026-07-04 06:29 UTCEPSS rescore
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  9. 2026-07-01 15:04 UTCEPSS rescore
  10. 2026-06-30 23:20 UTCEPSS rescore
  11. 2026-06-30 23:20 UTCEPSS rescore
  12. 2026-06-29 22:14 UTCOSV refresh
  13. 2026-06-29 14:04 UTCEPSS rescore
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  15. 2026-06-28 04:54 UTCEPSS rescore
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  17. 2026-06-27 03:07 UTCEPSS rescore
  18. 2026-06-25 13:48 UTCEPSS rescore
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  21. 2026-06-23 21:31 UTCEPSS rescore
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  23. 2026-06-22 14:24 UTCEPSS rescore
  24. 2026-06-21 14:55 UTCEPSS rescore
  25. 2026-06-21 14:55 UTCEPSS rescore
  26. 2026-06-21 01:58 UTCEPSS rescore
  27. 2026-06-21 01:58 UTCEPSS rescore
  28. 2026-06-19 19:24 UTCEPSS rescore
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  30. 2026-06-18 17:51 UTCEPSS rescore
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  38. 2026-06-13 22:58 UTCEPSS rescore
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  40. 2026-06-12 23:10 UTCEPSS rescore
  41. 2026-06-12 23:10 UTCEPSS rescore
  42. 2026-06-12 10:40 UTCOSV refresh
  43. 2026-06-11 13:58 UTCEPSS rescore
  44. 2026-06-11 13:58 UTCEPSS rescore
  45. 2026-06-10 22:16 UTCEPSS rescore
  46. 2026-06-10 13:20 UTCEPSS rescore
  47. 2026-06-08 14:15 UTCEPSS rescore
  48. 2026-06-08 14:15 UTCEPSS rescore
  49. 2026-06-07 15:23 UTCEPSS rescore
  50. 2026-06-07 15:23 UTCEPSS rescore
  51. 2026-06-06 13:46 UTCEPSS rescore
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  53. 2026-06-05 22:45 UTCEPSS rescore
  54. 2026-06-05 06:09 UTCEPSS rescore
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  56. 2026-06-04 13:11 UTCEPSS rescore
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  58. 2026-06-02 20:11 UTCEPSS rescore
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  60. 2026-06-02 20:11 UTCEPSS rescore
  61. 2026-05-31 22:29 UTCEPSS rescore
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  63. 2026-05-31 00:15 UTCEPSS rescore
  64. 2026-05-31 00:15 UTCEPSS rescore
  65. 2026-05-29 13:42 UTCEPSS rescore
  66. 2026-05-28 13:43 UTCEPSS rescore
  67. 2026-05-28 13:43 UTCEPSS rescore
  68. 2026-05-28 13:43 UTCEPSS rescore
  69. 2026-05-27 13:39 UTCEPSS rescore
  70. 2026-05-27 13:39 UTCEPSS rescore
  71. 2026-05-26 13:43 UTCEPSS rescore
  72. 2026-05-26 07:17 UTCEPSS rescore
  73. 2026-05-26 07:17 UTCEPSS rescore
  74. 2026-05-26 04:06 UTCEG score recompute
  75. 2026-05-26 04:06 UTCVendor advisory

Related CVEs(same vendor + same CWE)

Frequently asked(5)

What is CVE-2022-21723?
CVE-2022-21723 is a critical vulnerability published on January 27, 2022. PJSIP is a free and open source multimedia communication library written in C language implementing standard based protocols such as SIP, SDP, RTP, STUN, TURN, and ICE. In versions 2.11.1 and prior, parsing an incoming SIP message that contains a malformed multipart can potentially cause…
When was CVE-2022-21723 disclosed?
CVE-2022-21723 was first published in the National Vulnerability Database on January 27, 2022, with the most recent update on November 4, 2025. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2022-21723 actively exploited?
CVE-2022-21723 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 90.5% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2022-21723?
CVE-2022-21723 has a CVSS v3 base score of 9.1 (NVD).
How do I remediate CVE-2022-21723?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2022-21723, 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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