Page generated: 09 Nov 2026, 06:30 UTC
← Dashboard

CVE-2015-5477

named in ISC BIND 9.x before 9.9.7-P2 and 9.10.x before 9.10.2-P3 allows remote attackers to cause a denial of service (REQUIRE assertion failure and daemon exit) via TKEY queries.

CVSS 7.5 (HIGH) KEV: KNOWN CATALOG

Attention and evidence

HYPE SCORE
2.9/10
REALITY · THREAT PRIORITY
8.6/10
General review priority; not probability

Evidence confidence: Exploitation recorded

Why this priority?
  • Recorded exploitation baseline: +7.00
  • Technical severity: CVSS 7.5: +1.12
  • Fresh EPSS: 99.58%: +0.50

General review priority, not probability, victim count or asset-specific risk. A range covers missing CVSS/EPSS inputs within the current evidence state.

Sources: 10 documents and public datasets.

Hype components

Headline sample (25%)
20/100
Press, 30 days (60%)
40/100
Grounded branding (15%)
0/100
HYPE TOTAL29/100

Sources and documents

SC Media
Press · 13 Oct 2026, 07:00 · CISA adds five vulnerabilities to exploited list amid China-linked cyber espionage concerns - SC Media
Forkast News
Press · 11 Oct 2026, 07:00 · Federal Agencies Face Today’s Deadline to Patch Five Flax Typhoon CVEs Spanning a Decade - Forkast News
Security Affairs
Press · 11 Oct 2026, 07:00 · U.S. CISA adds ProFTPD, ONLYOFFICE Docs, Strapi, Apache Struts, and ISC BIND flaws to its Known Exploited V... - Security Affairs
Manufacturing Business Technology
Press · 09 Oct 2026, 15:03 · CISA Issues Warning on Chinese Government-Linked Threat Actors - Manufacturing Business Technology
The Hacker News
Press · 09 Oct 2026, 07:00 · Flax Typhoon Exploits Five Flaws as CISA Sets October 11 Deadline for Federal Agencies - The Hacker News
See all 10 source documents
finance.biggo.com
Press · 09 Oct 2026, 07:00 · CISA Orders Federal Agencies to Patch Five Exploited Flaws by October 11 Amid Flax Typhoon Campaign - finance.biggo.com
The Register
Press · 08 Oct 2026, 07:00 · US disrupts Chinese hacking tools as 7 govts warn of PRC spies stealing sensitive data worldwide - The Register
The Hacker News
Press · 08 Oct 2026, 07:00 · FBI Says China-Linked Hackers Ran Portal Giving Third Parties Access to Stolen Emails - The Hacker News
Bitdefender
Press · 12 Jul 2016, 07:00 · BIND Flaw Exposes DNS Servers to Denial-of-Service Attacks - Bitdefender
Cloudflare Blog
Press · 04 Aug 2015, 07:00 · A deep look at CVE-2015-5477 and how CloudFlare Virtual DNS customers are protected - Cloudflare Blog

Score evolution

● Hype   ● Reality

Earlier evidence-support scores are retained in history; this chart shows only the current priority definition.

First record: hype 2.9 · reality 8.6 (2026-11-02 15:12). The curve appears once the score changes.

Public exploit evidence

6

Public exploit entries / repo candidates

See 6 repos with metrics
RepositoryStarsForksLanguageUpdated
tintinweb/pub266123Python13 Mar 2026, 14:04
robertdavidgraham/cve-2015-54776440C01 Aug 2015, 21:32
elceef/tkeypoc149Python01 Aug 2015, 09:34
ilanyu/cve-2015-547712PHP19 Aug 2015, 16:22
knqyf263/cve-2015-547710Python17 Aug 2015, 02:00
xycloops123/TKEY-remote-DoS-vulnerability-exploit00Python11 May 2020, 18:06
Public exploit evidence
Evidence context and dated references

Reality is general threat/review priority, combining observed exploitation, CVSS severity and fresh EPSS. Evidence confidence is separate. This is not calibrated risk, a victim count or an asset-specific assessment. A range reflects missing numeric inputs.

Evidence in context

Confidence in exploitation evidence
Exploitation recorded
Priority basis
Recorded exploitation; CVSS 7.5; EPSS 99.6%
Attention, last 30 days
3 distinct story titles; 3 press documents; 1 publisher domains.
Technical potential
network access, no prior privileges, no user interaction.
Observed activity
Exploitation recorded in CISA KEV.
Known scale
Not quantified.
Evidence confidence basis
Trusted exploitation confirmation

Score evaluated: 2026-11-05 13:57:40.729730+00:00 · EPSS snapshot: 2026-11-05T12:03:04Z

Source event timeline
Published
29 Jul 2015, 14:00
First press mention
04 Aug 2015, 07:00
Added to the CISA KEV catalog
08 Oct 2026, 00:00
Latest press mention
13 Oct 2026, 07:00
Score calculated
05 Nov 2026, 13:57
PoCs on GitHub
6 repositories