CVE-2026-57159

HIGHNVD 7.57.5
EchelonGraph scoreMEDIUM confidence

“—” beside the score: it is equal to NVD's CVSS score.

This high-severity CVE scores 7.5 under NVD CVSS v3. EPSS exploit probability: 0.6% (48th percentile of EPSS-scored CVEs). No GitHub Security Advisory CVSS is on record for this CVE.

Triggered by: Headline CVSS from NVD CVSS v3
Sources: EPSS, NVD CVSS v3

Also known asEUVD-2026-71653 (ENISA EUVD)Source: ENISA EUVD

7.5EG
EchelonGraph verdictPlan mitigationNo release containing the referenced fix is confirmed: check the referenced fix and the vendor's advisory for a release that contains it; until one is applied, restrict network exposure of the affected system or apply the vendor's mitigation on your normal schedule at low or medium mission impact and sooner than that at high (the SSVC decision on this page).
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0.6%CVSS: 7.5Exploit: None knownExposed services: Not assessed

A fix is referenced (a reference tagged "Patch", often a source commit), but no release containing it is confirmed — find the release that contains it; until it is applied, mitigate (WAF / firewall / segmentation).

PJSIP is a free and open source multimedia communication library written in C. Prior to commit 673b978, a remote out-of-bounds read and write can occur in the SDP negotiator when the remote payload-type map maintenance feature is enabled. assign_pt_and_update_map() in pjmedia/src/pjmedia/sdp_neg.c uses payload-type numbers taken from a remote SDP offer or answer to index fixed-size internal tables without sufficient bounds validation, so a crafted remote SDP can cause memory access outside those tables. The practical impact is memory corruption and denial of service; code execution is not demonstrated. This path is only reached when PJMEDIA_SDP_NEG_MAINTAIN_REMOTE_PT_MAP is enabled. The default is disabled, so default builds are not affected; the feature is an interoperability option that integrating products may enable. This issue has been patched via commit 673b978.

CVSS v3
7.5
EG Score
7.5HIGHmedium confidence
EG Risk
49
EG Risk 49/100

EG Risk is EchelonGraph's 0–100 priority score. It fuses impact severity (EG Severity, the CVSS base score, never the KEV-floored or EPSS-lifted EG Score) with real-world exploitation and automatability, under weights EchelonGraph set by hand, so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner.

How it’s computed (value × EchelonGraph’s weight)
Severity75% × 45%
Impact severity (EG Severity): CVSS 7.5 of 10. Never the KEV-floored or EPSS-lifted EG Score.
Exploitation0.6% × 40%
FIRST EPSS: the 30-day exploitation probability when EchelonGraph scored this CVE.
Automatability100% × 15%
CISA's SSVC Automatable value: yes (Vulnrichment).
SSVC (CISA's decision table, applied by EchelonGraph): Track at low or medium mission impact; Attend at high (mission-essential systems).
Exploitation none (CISA Vulnrichment) · Automatable yes (CISA Vulnrichment) · Technical impact total (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE.
Action: A fix is referenced, but no release containing it is confirmed. Check the referenced fix and the vendor's advisory for a release that contains it; until one is applied, restrict network exposure of the affected system or apply the vendor's mitigation on your normal schedule at low or medium mission impact and sooner than that at high.
EPSS PROB
0.6%
EPSS %ILE
48th
KEV
Not listed

What the EG score is made of (scorer v4.0: the three questions the 0–10 score mixes, published apart · methodology)

The EG score (7.5): severity, escalated by confirmed exploitation. This CVE's 7.5 is its impact severity (EG Severity), not escalated.

EG Severity
7.5 HIGHCVSS-B, impact only: no KEV listing, EPSS or EG-KEV tier raises it.NVD CVSS v3 · CVSS v3.0 or v3.1
EG Likelihood
0.6% within 30 daysSource: FIRST EPSS (model v2026.06.15, score date 2026-10-31). FIRST's exploitation probability, not an EchelonGraph model.
Confirmed exploitation
None on record (CISA KEV, EG-KEV Tier 1)Reported apart from the likelihood: an observed fact, not a probability.
EG Priority
SSVC Track at medium mission impactTrack at low or medium mission impact; Attend at high (mission-essential systems).CISA BOD 26-04: 3 days if the affected system is publicly exposed; 60 days if it is not.No released fix is confirmed on this page, but CISA's timeline does not wait for a fix's release: it starts when an agency identifies the flaw on an asset and updates the CDM Agency and Federal Dashboard, and the directive counts patching, decommissioning the system or another action as remediation. Until a fixed release is applied, mitigate as this page's verdict says.Each input and its source, and whom BOD 26-04 binds: the SSVC and BOD 26-04 blocks below.

SSVC (CISA's decision table, applied by EchelonGraph)Track at low or medium mission impact; Attend at high (mission-essential systems).

A fix is referenced, but no release containing it is confirmed. Check the referenced fix and the vendor's advisory for a release that contains it; until one is applied, restrict network exposure of the affected system or apply the vendor's mitigation on your normal schedule at low or medium mission impact and sooner than that at high.

Exploitation none (CISA Vulnrichment) · Automatable yes (CISA Vulnrichment) · Technical impact total (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE. Mission impact is CISA's Mission & Well-being decision point, and only you can judge it. CISA's table makes it high when Mission Prevalence is Essential — the vulnerable component "directly provides capabilities that constitute at least one MEF for at least one entity" (MEF: mission essential function) — or when Public Well-Being Impact is Irreversible: "multiple fatalities are likely", the cyber-physical system "is likely lost or destroyed", "extreme or serious externalities" are imposed on other parties, or social systems such as elections or the financial grid "are destabilized and potentially collapse". CISA's decision table

BOD 26-04 (CISA's remediation timeline, Table 1)3 days if the affected system is publicly exposed; 60 days if it is not.

No released fix is confirmed on this page, but CISA's timeline does not wait for a fix's release: it starts when an agency identifies the flaw on an asset and updates the CDM Agency and Federal Dashboard, and the directive counts patching, decommissioning the system or another action as remediation. Until a fixed release is applied, mitigate as this page's verdict says.

The score's inputs: In CISA KEV no (CISA's KEV catalog) · Automatable yes (CISA Vulnrichment) · Technical impact total (CISA Vulnrichment). Whether your system is publicly exposed is yours to answer. BOD 26-04 binds US Federal Civilian Executive Branch agencies; for anyone else it is CISA's published timeline, a reference rather than an obligation. The directive · how EchelonGraph applies it

Published

September 4, 2026

Last Modified

September 11, 2026

Advisory Details (2)

Auto-updated Sep 4, 2026
Fix referenced — no release confirmed yet. Sources: github, github_commit.
GitHub commit

commit 673b978aab1f (pjsip/pjproject)

Fix landed in pjsip/pjproject commit 673b978aab1f — awaiting tagged release

https://github.com/pjsip/pjproject/commit/673b978aab1fe3ab874247be32c871acc880cbeb
GitHub advisoryMentions a patch (unverified)

SDP parser out-of-bounds write in remote payload-type map maintenance · Advisory · pjsip/pjproject · GitHub

https://github.com/pjsip/pjproject/security/advisories/GHSA-rfwg-w9gq-9mw2

Affected Packages

(1 across 1 ecosystem)
Debian:14(1)
PackageVulnerable rangeFix by version rangeDependents
asterisk0.1.11-3 ... 1:22.9.0+dfsg+~cs6.16.60671434-1 (296 versions)
  • every version on: no fix on record
—

Weakness Classification(2)

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 time one of our pipelines fetched, updated or re-scored this CVE. 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. An arrow marks a change the record states ("CVSS v3 → 9.1"); EPSS and GHSA rows show the values recorded at that time, not what changed (EPSS values are rounded; hover one for the exact figures). Most recent first.

  1. 2026-11-01 16:34 UTCEPSS rescoreEPSS 0.6% · 48th percentile
  2. 2026-10-31 17:38 UTCEG score recompute
  3. 2026-10-31 16:33 UTCEPSS rescoreEPSS 0.6% · 48th percentile
  4. 2026-10-30 16:34 UTCEPSS rescoreEPSS 0.6% · 48th percentile
  5. 2026-10-29 16:33 UTCEPSS rescoreEPSS 0.6% · 48th percentile
  6. 2026-10-28 16:32 UTCEPSS rescoreEPSS 0.6% · 48th percentile
  7. 2026-10-27 16:32 UTCEPSS rescoreEPSS 0.6% · 48th percentile
  8. 2026-10-26 16:31 UTCEPSS rescoreEPSS 0.6% · 48th percentile
  9. 2026-10-25 16:33 UTCEPSS rescoreEPSS 0.6% · 48th percentile
  10. 2026-10-25 14:17 UTCEG score recompute
  11. 2026-10-24 16:33 UTCEPSS rescoreEPSS 0.6% · 47th percentile
  12. 2026-10-24 04:29 UTCEG score recompute
  13. 2026-10-23 16:32 UTCEPSS rescoreEPSS 0.6% · 47th percentile
  14. 2026-10-22 16:34 UTCEPSS rescoreEPSS 0.6% · 47th percentile
  15. 2026-10-21 16:33 UTCEPSS rescoreEPSS 0.6% · 47th percentile
  16. 2026-10-20 16:33 UTCEPSS rescoreEPSS 0.6% · 47th percentile
  17. 2026-10-19 16:32 UTCEPSS rescoreEPSS 0.6% · 47th percentile
  18. 2026-10-18 16:32 UTCEPSS rescoreEPSS 0.6% · 47th percentile
  19. 2026-10-18 03:29 UTCEG score recompute
  20. 2026-10-17 16:34 UTCEPSS rescoreEPSS 0.6% · 47th percentile
  21. 2026-10-16 16:42 UTCEPSS rescoreEPSS 0.6% · 47th percentile
  22. 2026-10-16 15:19 UTCEG score recompute
  23. 2026-10-15 16:32 UTCEPSS rescoreEPSS 0.6% · 47th percentile
  24. 2026-10-14 16:33 UTCEPSS rescoreEPSS 0.6% · 47th percentile
  25. 2026-10-13 16:34 UTCEPSS rescoreEPSS 0.6% · 47th percentile
Show 73 more
  1. 2026-10-12 16:34 UTCEPSS rescoreEPSS 0.6% · 46th percentile
  2. 2026-10-12 15:54 UTCEG score recompute
  3. 2026-10-11 19:37 UTCEG score recompute
  4. 2026-10-11 16:52 UTCEG score recompute
  5. 2026-10-11 14:15 UTCEG score recompute
  6. 2026-10-11 13:49 UTCEPSS rescoreEPSS 0.6% · 46th percentile
  7. 2026-10-10 20:00 UTCEPSS rescoreEPSS 0.6% · 46th percentile
  8. 2026-10-09 23:05 UTCEG score recompute
  9. 2026-10-09 20:07 UTCEPSS rescoreEPSS 0.6% · 46th percentile
  10. 2026-10-09 01:09 UTCEG score recompute
  11. 2026-10-08 17:13 UTCEPSS rescoreEPSS 0.6% · 46th percentile
  12. 2026-10-07 23:48 UTCEPSS rescoreEPSS 0.6% · 46th percentile
  13. 2026-10-06 20:24 UTCEG score recompute
  14. 2026-10-06 15:18 UTCEPSS rescoreEPSS 0.6% · 46th percentile
  15. 2026-10-05 18:07 UTCEG score recompute
  16. 2026-10-05 17:43 UTCEPSS rescoreEPSS 0.6% · 46th percentile
  17. 2026-10-05 04:58 UTCEG score recompute
  18. 2026-10-04 23:22 UTCEPSS rescoreEPSS 0.6% · 46th percentile
  19. 2026-10-04 02:40 UTCEG score recompute
  20. 2026-10-03 14:26 UTCEPSS rescoreEPSS 0.6% · 46th percentile
  21. 2026-10-03 00:22 UTCEG score recompute
  22. 2026-10-02 17:56 UTCEPSS rescoreEPSS 0.6% · 46th percentile
  23. 2026-10-01 21:10 UTCEG score recompute
  24. 2026-10-01 19:50 UTCEPSS rescoreEPSS 0.6% · 46th percentile
  25. 2026-09-30 18:53 UTCEG score recompute
  26. 2026-09-30 15:03 UTCEPSS rescoreEPSS 0.6% · 46th percentile
  27. 2026-09-30 02:40 UTCEG score recompute
  28. 2026-09-29 15:22 UTCEPSS rescoreEPSS 0.6% · 46th percentile
  29. 2026-09-29 09:51 UTCEG score recompute
  30. 2026-09-28 20:42 UTCEG score recompute
  31. 2026-09-28 13:51 UTCEPSS rescoreEPSS 0.6% · 46th percentile
  32. 2026-09-27 18:25 UTCEG score recompute
  33. 2026-09-27 13:48 UTCEPSS rescoreEPSS 0.6% · 46th percentile
  34. 2026-09-27 05:17 UTCEG score recompute
  35. 2026-09-26 15:59 UTCEPSS rescoreEPSS 0.6% · 46th percentile
  36. 2026-09-26 02:09 UTCEG score recompute
  37. 2026-09-24 19:16 UTCEG score recompute
  38. 2026-09-24 14:04 UTCEPSS rescoreEPSS 0.6% · 46th percentile
  39. 2026-09-24 06:08 UTCEG score recompute
  40. 2026-09-23 17:54 UTCEPSS rescoreEPSS 0.3% · 27th percentile
  41. 2026-09-23 03:51 UTCEG score recompute
  42. 2026-09-22 01:33 UTCEG score recompute
  43. 2026-09-20 23:17 UTCEG score recompute
  44. 2026-09-20 20:16 UTCEPSS rescoreEPSS 0.3% · 27th percentile
  45. 2026-09-19 20:55 UTCEG score recompute
  46. 2026-09-19 07:45 UTCEG score recompute
  47. 2026-09-18 19:28 UTCEPSS rescoreEPSS 0.3% · 27th percentile
  48. 2026-09-18 05:22 UTCEG score recompute
  49. 2026-09-17 19:31 UTCEPSS rescoreEPSS 0.3% · 27th percentile
  50. 2026-09-17 03:05 UTCEG score recompute
  51. 2026-09-16 14:08 UTCEPSS rescoreEPSS 0.3% · 27th percentile
  52. 2026-09-16 13:57 UTCEG score recompute
  53. 2026-09-16 05:15 UTCEPSS rescoreEPSS 0.3% · 27th percentile
  54. 2026-09-15 11:33 UTCEG score recompute
  55. 2026-09-15 03:11 UTCEPSS rescoreEPSS 0.3% · 27th percentile
  56. 2026-09-13 20:07 UTCEG score recompute
  57. 2026-09-13 16:47 UTCEPSS rescoreEPSS 0.3% · 27th percentile
  58. 2026-09-12 17:50 UTCEG score recompute
  59. 2026-09-11 15:33 UTCEG score recompute▼ 0.90
  60. 2026-09-11 15:32 UTCNVD updateCVSS v3 → 7.5
  61. 2026-09-11 14:53 UTCEPSS rescoreEPSS 0.3% · 24th percentile
  62. 2026-09-10 13:23 UTCEG score recompute
  63. 2026-09-10 09:35 UTCEPSS rescoreEPSS 0.3% · 24th percentile
  64. 2026-09-09 11:02 UTCEG score recompute
  65. 2026-09-08 22:01 UTCEPSS rescoreEPSS 0.3% · 24th percentile
  66. 2026-09-08 19:56 UTCEG score recompute
  67. 2026-09-08 18:16 UTCEG score recompute
  68. 2026-09-06 23:10 UTCEG score recompute
  69. 2026-09-06 13:47 UTCEPSS rescoreEPSS 0.3% · 24th percentile
  70. 2026-09-05 20:52 UTCEG score recompute
  71. 2026-09-04 18:35 UTCEG score recompute
  72. 2026-09-04 17:20 UTCEG score recomputeFirst assessed: 8.4 HIGH
  73. 2026-09-04 17:19 UTCMITRE cvelistV5first tracked

Frequently asked(5)

What is CVE-2026-57159?
CVE-2026-57159 is a high-severity vulnerability; its CVE record was published on September 4, 2026. PJSIP is a free and open source multimedia communication library written in C. Prior to commit 673b978, a remote out-of-bounds read and write can occur in the SDP negotiator when the remote payload-type map maintenance feature is enabled. assign_pt_and_update_map() in pjmedia/src/pjmedia/sdp_neg.c…
When was the CVE record for CVE-2026-57159 published?
The CVE record for CVE-2026-57159 was published on September 4, 2026. That is the record's publication date; the vulnerability itself may have been made public earlier. EchelonGraph's copy of the record carries a last-modified date of September 11, 2026; the record at its source may have been updated since.
Is CVE-2026-57159 actively exploited?
CVE-2026-57159 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.6% probability of exploitation in the next 30 days (48th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-57159?
CVE-2026-57159 has a CVSS v3 base score of 7.5 (NVD).
How do I remediate CVE-2026-57159?
A fix for CVE-2026-57159 is referenced (a reference tagged "Patch", often a source commit), but EchelonGraph has no release containing it on record. Check that reference and the vendor's advisory for a release that contains the fix and update to it; until then, restrict network exposure of the affected system or apply the vendor's mitigation.

Dependency Blast Radius

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