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Fencer Intel
low 3.3

CVE-2016-1544 json

nghttp2 before 1.7.1 allows remote attackers to cause a denial of service (memory exhaustion).

published 2020-02-06 6 y ago modified 2026-06-17 4 mo ago also EUVD-2016-2639

cvss
3.3
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
0.9%
EPSS 0.9% chance of exploitation in 30 days, percentile 59%
public exploits
0
none known

Summary

nghttp2 before 1.7.1 allows remote attackers to cause a denial of service (memory exhaustion).

Patch / fix

  • nghttp2 nghttp2 1.7.1
  • nghttp2 Debian 14, Debian 13, Debian 12 1.7.1-1

debian advisories DEBIAN-CVE-2016-1544

  • nghttp2 SLES for SAP 12 SP5, SLES for SAP 12 SP4, SLES for SAP 12 SP3 +13 more 1.39.2-3.5.1

suse advisories SUSE-SU-2021:0932-1

  • nghttp2 openSUSE Tumbleweed 1.17.0-1.1

opensuse advisories openSUSE-SU-2024:10164-1

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2016-1544 updated cvss 1.9

nghttp2: out of memory error due to unlimited incoming HTTP header fields

  • Red Hat Software Collections httpd24-nghttp2, httpd24-libnghttp2
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

0.89% chance of exploitation in the next 30 days, higher than 59% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by version score vector
NVD 3.1 3.3 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
NVD 2.0 2.1 AV:L/AC:L/Au:N/C:N/I:N/A:P

Affected products

  • nghttp2 nghttp2

Classification

Weakness
  • CWE-400 Uncontrolled Resource Consumption

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.